KR20070120678A - Optical member, back light assembly having the optical member and display apparatus having the optical member - Google Patents

Abstract

An optical member, a backlight assembly having the same, and a display device having the same are provided to prevent the optical member from being bent, thereby improving the display quality of an image, by using a flexure suppressing member inserted into a through hole formed in the optical member. An optical member comprises a first face(110) for receiving a light, a second face(120) facing the first face to output the light, a through hole(130) penetrating the first face and the second face, and an expansion portion(135) formed at one of both entrances of the through hole. A flexure suppressing member passes through the through hole, wherein flexure suppressing member has a protrusion, which is caught on the expansion portion of the through hole.

Description

Optical member, a backlight assembly having the same, and a display device having the same {OPTICAL MEMBER, BACK LIGHT ASSEMBLY HAVING THE OPTICAL MEMBER AND DISPLAY APPARATUS HAVING THE OPTICAL MEMBER}

1 is a plan view of an optical member according to a first embodiment of the present invention.

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

3 is a cross-sectional view illustrating an optical member including a bending suppression member coupled to the through hole illustrated in FIG. 2.

4 is a cross-sectional view showing an optical member according to a second embodiment of the present invention.

5 is a cross-sectional view illustrating a backlight assembly according to a third embodiment of the present invention.

6 is an exploded cross-sectional view of a backlight assembly according to a fourth embodiment of the present invention.

FIG. 7 is an enlarged view of a portion 'A' shown in FIG. 6.

8 is a cross-sectional view showing a locking pin for fixing the end of the bending suppression member.

9 is a cross-sectional view illustrating a support member included in the backlight assembly illustrated in FIG. 7.

10 is a cross-sectional view showing a supporting member included in the backlight assembly according to another embodiment of the present invention.

11 is an exploded cross-sectional view illustrating a supporting member included in a backlight assembly according to another exemplary embodiment of the present invention.

12 is a cross-sectional view illustrating a display device according to a fifth exemplary embodiment of the present invention.

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

210: storage container 230: optical member

300: display panel 305: middle chassis

The present invention relates to an optical member, a backlight assembly having the same, and a display device having the same.

Recently, with the development of technology in the field of semiconductor devices, the development of an information processing device capable of processing more data in a short time is progressing. In addition, in recent years, technology development of a display device for visually recognizing data processed by the information processing device is being developed along with the information processing device.

Typical display devices include liquid crystal display panels (LCDs), organic light emitting display devices (OLEDs), plasma display panels (PDPs), and the like.

 Among them, the liquid crystal display device has an advantage that power consumption, volume and weight for displaying an image are relatively small compared to a CRT-type ray tube type display device.

A liquid crystal display device having the above-described advantages includes a liquid crystal display panel for displaying an image using liquid crystal, a lamp for providing light to the liquid crystal display panel, and a liquid crystal display panel and a lamp. And a diffuser plate disposed at the diffuser to diffuse light provided from the lamp and provide the diffused light to the liquid crystal display panel.

In recent years, as the diagonal dimension of the liquid crystal display device increases, the diagonal dimensions of the liquid crystal display panel and the diffusion plate also increase. However, as the diagonal dimension of the liquid crystal display panel increases, the central portion of the liquid crystal display panel may be convexly curved toward the diffusion plate due to various causes, for example, heat or humidity.

In addition, as the diagonal dimension of the diffusion plate interposed between the liquid crystal display panel and the lamp increases, the central portion of the diffusion plate is convexly curved toward the liquid crystal display panel due to various causes, for example, heat or humidity.

In particular, when the center portion of the liquid crystal display panel is convexly curved toward the diffusion plate and the center portion of the diffusion plate is convexly curved toward the liquid crystal display panel, the interval between the center portion of the diffusion plate and the center portion of the liquid crystal display panel is too narrow. A fatal problem may occur in which an unevenness occurs in a central portion of an image generated from a liquid crystal display panel.

Accordingly, one object of the present invention is to provide an optical member which prevents the display quality degradation of an image generated from a liquid crystal display panel.

Another object of the present invention is to provide a backlight assembly including the optical member.

Another object of the present invention is to provide a display device including the optical member.

The optical member for realizing another object of the present invention includes a first surface through which light is incident, a second surface facing the first surface, and a through hole penetrating through the first and second surfaces. And an extension formed at either of the inlets of the through holes.

In addition, a backlight assembly for realizing another object of the present invention includes a storage container including sidewalls disposed at the edge of the bottom plate to form a bottom plate and a receiving space, a plurality of light emitting containers are disposed on the top surface of the bottom plate to generate light. A gap between the optical member and the bottom plate and the optical member including a light source, a first surface supported on the top of the sidewall and having a second surface facing the first surface and receiving the light generated by the light source and emitting diffused light It includes a bending suppression member connecting the optical member and the bottom plate to keep a constant.

In addition, a display device for realizing another object of the present invention is a storage container including a side plate disposed on the edge of the bottom plate to form a bottom plate and the receiving space, a plurality of is disposed on the top surface of the bottom plate to generate light Between the optical member, the bottom plate and the optical member comprising a light source, a first surface supported on the top of the sidewall and receiving a light generated from the light source and a second surface facing the first surface and emitting diffused light One end is connected to the optical member and passes through the through member to support the optical member and to maintain a gap between the bottom plate and the optical member with a support member having a through hole connecting the bottom plate and the optical member. And a bending suppression member having the other end connected to the bottom plate and a display panel spaced apart from the optical member and displaying an image through diffused light emitted from the optical member.

Hereinafter, an optical member, a backlight assembly having the same, and a display device having the same according to embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. Those skilled in the art may implement the present invention in various other forms without departing from the technical spirit of the present invention. In the accompanying drawings, the dimensions of the container, the light source, the optical member, the support member, the bending suppression member, the display panel, and other structures are shown in an enlarged scale than actual for clarity of the present invention. In the present invention, when a storage container, a light source, an optical member, a support member, a bending suppression member, a display panel and other structures are referred to as being formed "on", "upper" or "lower", the container, Means that the light source, optical member, support member, bending suppression member, display panel and other structures are directly formed on or beneath the housing, light source, optical member, support member, bending suppression member, display panel and other structures, or Other containers, light sources, optical members, support members, bending suppression members, display panels, and other structures may be further formed. In addition, the container, the light source, the optical member, the support member, the bending suppression member, the display panel and other structures may be, for example, "first", "second", "third" and / or "fourth", or the like. When referred to, this is not intended to limit these members but merely to distinguish between the receiving container, the light source, the optical member, the support member, the bending suppression member, the display panel and other structures. Thus, for example, a substrate such as "first", "second", "third" and / or "fourth" may be used as a container, a light source, an optical member, a support member, a warpage suppression member, a display panel, and the like. Can be used selectively or interchangeably for the structures, respectively.

Optical member

Example  One

1 is a plan view of an optical member according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line II ′ of FIG. 1.

1 and 2, an optical member 100 includes a first face 110, a second face 120, and a through hole 130.

The optical member 100 according to the present embodiment may be, for example, a diffusion plate employed in a liquid crystal display (LCD). Specifically, the optical member 100 diffuses the incident light 140 having a non-uniform optical distribution and emits the diffused light 150 having a uniform optical distribution.

In the present embodiment, the optical member 100 has a plate shape, and the incident light 140 is incident into the optical member 100 using the first surface 110 of the optical member 100.

The second surface 120 is spaced apart from the first surface 110, and the second surface 120 faces the first surface 110. The second surface 120 emits the diffused light 150 which is incident on the first surface 110 and then diffused.

The through hole 130 is formed through the first surface 110 and the second surface 120 of the optical member 100 for the purpose of preventing the optical member 100 from being bent by heat or humidity.

In the present exemplary embodiment, since the through hole 130 of the optical member 100 penetrates through the first surface 110 and the second surface 120 of the optical member 100, the through hole 130 is formed through the first and second surfaces. It has a first inlet 131 and a second inlet 132 formed near the surface of the second faces 110, 120, respectively.

In the present embodiment, an extension 135 may be further formed at the first inlet 131 and / or the second inlet 132 of the through hole 130. In the present embodiment, the extension 135 is formed by increasing the area of the first inlet 131 and / or the second inlet 132 of the through hole 130. In FIG. 2, the extension 135 is formed at, for example, the second inlet 132 of the through hole 130.

3 is a cross-sectional view illustrating an optical member including a bending suppression member coupled to the through hole illustrated in FIG. 2.

In this embodiment, in order to remove the warpage generated in the optical member 100 by using the through-hole 130 of the optical member 100, the optical member 100 may further include a bending suppression member 160. .

In this embodiment, the bending suppression member 160 has a thickness that can pass through the through hole 130, for example, and the length L of the bending suppression member 160 is the first surface of the optical member 100. It is preferably formed longer than the thickness T measured from 110 to the second surface 120.

In this embodiment, the warpage suppression member 160 has a wire shape having, for example, a first end 162 and a second end 163. In the present embodiment, the bending suppression member 160 may be made of, for example, a transparent material, and may have flexible characteristics. Preferably, the optical refractive index of the warpage suppression member 160 is preferably substantially the same as the optical refractive index of the optical member 100.

In order to prevent the bending suppression member 160 according to the present embodiment from being detached from the optical member 100 arbitrarily, the engaging portion 164 is attached to the first end 162 or the second end 163 of the bending suppression member 160. ) Is formed. In this embodiment, for example, the locking portion 164 is formed at the second end 163. The engaging portion 164 formed at the second end 163 according to the present embodiment is an extension formed at the first inlet 131 and / or the second inlet 132 of the through hole 130 of the optical member 100. It is thicker than the first end 162 so as to be caught by the 135. As a result, the warpage suppression member 160 is not arbitrarily separated from the optical member 100 by the warpage suppression member 160 inserted into the through hole 130 of the optical member 100.

Hereinafter, a process of removing the warpage of the optical member 100 by using the optical member 100 and the warpage suppression member 160 according to the present invention will be described.

First, when the optical member 100 is viewed from above the second surface 120 of the optical member 100, if the second surface 120 is convexly curved, the first end of the bending suppression member 160 The 162 is inserted through the second inlet 132 of the through hole 130 formed in the second surface 120. Thus, the locking portion 164 formed at the second end 163 of the bending suppression member 160 is caught by the expansion portion 135 of the through hole 130, and as a result, the bending suppression member 160 is formed of an optical member ( 100).

Subsequently, the warpage of the warpage suppression member 100 can be removed by pulling and fixing the second end 163 of the warpage suppression member 160 in a direction opposite to the warpage direction of the optical member 100.

Example  2

4 is a cross-sectional view showing an optical member according to a second embodiment of the present invention.

Referring to FIG. 4, the optical member 100 includes an optical body 155 and a bending suppression member 170.

In the present embodiment, the optical body 155 has a plate shape, and the optical body 155 includes a first surface 110 and a second surface 120 facing the first surface 110. The first surface 110 is disposed to face the incident light 140, and the incident light 140 is incident on the first surface 110.

The second surface 120 is spaced apart from the first surface 110, and the second surface 120 and the first surface 110 are disposed to face each other. The diffused light 150 incident and diffused into the first surface 110 is emitted to the second surface 120.

In the present embodiment, the bending suppression member 170 may have a wire shape having, for example, a first end 172 and a second end 174 facing the first end 172.

The bending suppression member 170 having a wire shape is integrally formed with the optical body 155. For example, the first end 172 or the second end 174 of the warpage suppression member 170 is secured to the interior of the optical body 155 via the first side 110 or the second side 120. . In the present embodiment, the bending suppression member 170 is fixed to the inside of the optical body 155 through the first surface 110 of the optical body 155 facing the incident light 140.

Hereinafter, the process of removing the bending of an optical member using the bending suppression member formed integrally with the optical member by this invention is demonstrated.

First, when the optical body 155 is viewed from above the second surface 120 of the optical body 155, when the second surface 120 is convexly curved, the first end portion of the bending suppression member 170 ( 172 is secured to the interior of the optical body 155 via the first surface 110. Subsequently, the warpage formed in the warpage suppression member 100 can be removed by pulling and fixing the second end 174 of the warpage suppression member 170 in a direction opposite to the warpage direction of the optical member 100.

Backlight assembly

Example  3

5 is a cross-sectional view illustrating a backlight assembly according to a third embodiment of the present invention.

Referring to FIG. 5, the backlight assembly 200 includes a storage container 210, a light source 220, an optical member 230, and a warpage suppression member 240.

The storage container 210 includes a bottom plate 212 and side walls 214. In the present embodiment, the bottom plate 212 has a rectangular shape when viewed in plan. The side walls 214 are disposed at the edges of the bottom plate 212 to form an accommodation space above the floor plate 212.

A plurality of light sources 220 are disposed on the top surface of the bottom plate 212 of the storage container 210. In the present embodiment, the light source 220 may be a cold cathode fluorescent lamp (CCFL). In the present embodiment, the plurality of cold cathode ray tube lamps are arranged in a parallel manner such that the bodies of the light sources are parallel to each other on the bottom plate 212.

The optical member 230 is disposed on an upper end of the sidewall 214 disposed at the edge of the bottom plate 212, and receives and scatters the light generated by the light source 220 to improve the uniformity of the light. In the present embodiment, the optical member 230 includes a first surface 232 facing the light source 220 and a second surface 234 facing the first surface 232 and emitting diffused light.

The warpage suppression member 240 may be formed of the optical member 230 and the bottom surface 212 of the storage container 210 to maintain a gap G between the first surface 232 of the optical member 230. The bottom plate 212 is interconnected. In this case, the bending suppression member 240 may have a thickness as thin as possible to prevent a decrease in luminance due to the blocking of light directed to the optical member 230, and sufficient to withstand the tension generated by the bending of the optical member 230. It is preferable to use a member having rigidity.

Example  4

6 is an exploded cross-sectional view of a backlight assembly according to a fourth embodiment of the present invention. FIG. 7 is an enlarged view of a portion 'A' shown in FIG. 6.

6 and 7, the backlight assembly 200 includes a storage container 210, a light source 220, an optical member 230, and a warpage suppression member 242.

The storage container 210 includes a bottom plate 212 and side walls 214. In the present embodiment, the bottom plate 212 has a rectangular shape when viewed in plan. The side walls 214 are disposed at the edges of the bottom plate 212 to form a storage space above the bottom plate 212.

A plurality of light sources 220 are disposed on an upper surface of the bottom plate 212 of the storage container 210. In this embodiment, the light source 220 may be a cold cathode ray tube lamp (CCFL). In this embodiment, the plurality of cold cathode ray tube lamps are arranged in a parallel manner so that the bodies of the light source 220 are parallel to each other on the bottom plate 212.

The optical member 230 is disposed on an upper end of the sidewall 214 disposed at the edge of the bottom plate 212, and receives and scatters the light generated by the light source 220 to improve the uniformity of the light. In the present exemplary embodiment, the optical member 230 may include a first surface 232 facing the light source 220, a second surface 234 facing the first surface 232, and emitting diffused light, and a first penetration. Ball 235.

In this embodiment, the first through hole 235 penetrates the first face 232 and the second face 234, so that the first through hole 235 has a first inlet 235a and a second end. (235b). In the present embodiment, the first inlet 235a of the first through hole 235 is formed in the first surface 232, and the second inlet 235b facing the first inlet 235a has a second surface ( 234 is formed. In this embodiment, an extension 236 may be formed at the first inlet 235a and / or the second end 235b.

The bending suppression member 242 removes the bending of the optical member 230 by using the first through hole 235 of the optical member 230.

Specifically, the warpage suppression member 242 has a wire shape having a first end 243 and a second end 244. In the present embodiment, the bending restraining member 242 not only has a thickness suitable for passing through the first through hole 235, but also at least from the first face 232 to the second face 234 of the optical member 230. It has a length longer than the measured thickness. On the other hand, at the second end 244 of the bending suppression member 242, a locking portion 244a having a thicker thickness than that of the second end 244 is formed. The locking portion 244a is coupled to the expansion portion 236 formed in the first through hole 235 of the optical member 230 to prevent the bending suppression member 242 from being arbitrarily separated from the optical member 230.

In the present embodiment, the storage container 210 facing the optical member 230 to fix the first end 242 opposite the second end 244 in which the engaging portion 244a is formed among the bending suppression members 242. A second through hole 213 is formed in the bottom plate 212. The first end 242 of the bending restraining member 242 is discharged to the outside of the bottom plate 212 through the second through hole 213 and then fixed to the bottom plate 212.

8 is a cross-sectional view showing a locking pin for fixing the end of the bending suppression member. Referring to FIG. 8, the first end 243 of the bending restraining member 242 discharged to the outside of the bottom plate 212 through the second through hole 213 formed in the bottom plate 212 of the storage container 210. Is fixed to the locking pin 215. The locking pin 215 prevents the first end 243 of the bending restraining member 242 from entering the inside of the storage container 210 again through the second through hole 213, and thus prevents the bending restraining member 242. A constant tension is always applied to prevent warpage of the optical member 230.

9 is a cross-sectional view illustrating a support member included in the backlight assembly illustrated in FIG. 7. The backlight assembly according to the present embodiment illustrated in FIG. 9 is substantially the same as the backlight assembly described with reference to FIG. 8 except for the supporting member 216. Therefore, duplicate description of the same components will be omitted, and the same reference numerals and reference numerals will be given to the same components.

Referring to FIG. 9, the backlight assembly 200 may further include a support member 216. The supporting member 216 according to the present embodiment serves to prevent the optical member 230 from bending toward the light source 220 due to its own weight.

In the present embodiment, the support member 216 includes, for example, a support plate 216a having a plate shape and a support 216b formed in a solid shape on an upper surface of the support plate 216a. In this embodiment, the support plate 216a is firmly fixed to the bottom plate 212 of the storage container 210 by screws or the like.

The end portion of the support 216b of the support member 216 is in contact with the first surface 232 of the optical member 230, and the support plate 216a of the support member 216 is fixed to the bottom plate 212. Since the optical member 230 is fixed by the bending suppression member 242, the optical member 230 can not be convex with respect to the bottom plate 212 or concave with respect to the bottom plate 212.

10 is a cross-sectional view showing a supporting member included in the backlight assembly according to another embodiment of the present invention. The backlight assembly according to the present embodiment illustrated in FIG. 10 is substantially the same as the backlight assembly described with reference to FIG. 9 except for the supporting member 217. Therefore, duplicate description of the same components will be omitted, and the same reference numerals and reference numerals will be given to the same components.

Referring to FIG. 10, the backlight assembly 200 may further include a support member 217. The supporting member 217 according to the present embodiment serves to prevent the optical member 230 from bending toward the light source 220 due to its own weight.

In the present embodiment, the support member 217 may include, for example, a support plate 217a having a plate shape, a support portion 217b formed on a top surface of the support plate 217a, and a support plate 217a and a support portion 217b. The through hole 217c penetrates. In this embodiment, the support plate 217a is firmly fixed to the bottom plate 212 of the storage container 210 by screws or the like.

An end portion of the supporting portion 217b of the supporting member 217 is in contact with the first surface 232 of the optical member 230, and the supporting plate 217a of the supporting member 217 is fixed to the bottom plate 212 and is bent. The suppressing member 242 is fixed to the bottom plate 212 through the through hole 217c formed in the supporting member 217.

11 is an exploded cross-sectional view illustrating a supporting member included in a backlight assembly according to another exemplary embodiment of the present invention. The backlight assembly according to the present embodiment shown in FIG. 11 is substantially the same as the backlight assembly shown in FIG. 10 except for the bending suppression member. Therefore, duplicate description of the same components will be omitted, and the same reference numerals and reference numerals will be given to the same components.

Referring to FIG. 11, the warpage suppression member 248 of the backlight assembly 200 has a wire shape including a first end 247 and a second end 249. The first end 247 of the anti-bending member 248 according to the present embodiment is integrally fixed therein through the first surface 232 of the optical member 230.

In the present embodiment, the second end 249 of the bending restraining member 249 passes through the through hole 217c and the bottom plate 212 penetrating the support part 217b and the support plate 217a of the support member 217. The hole 213 is firmly fixed to the bottom plate 212.

Display

Example  5

12 is a cross-sectional view illustrating a display device according to a fifth exemplary embodiment of the present invention.

Referring to FIG. 12, the display device 400 includes a backlight assembly 200 and a display panel 300.

 The backlight assembly 200 includes a storage container 210, a support member 217, a light source 220, an optical member 230, and a warpage suppression member 240.

The storage container 210 includes a bottom plate 212 and side walls 214. In the present embodiment, the bottom plate 212 has a rectangular shape when viewed in plan. The side walls 214 are disposed at the edges of the bottom plate 212 to form an accommodation space above the bottom plate 212.

A plurality of light sources 220 are disposed on the top surface of the bottom plate 212 of the storage container 210. In the present embodiment, the light source 220 may be a cold cathode fluorescent lamp (CCFL). In the present embodiment, the plurality of cold cathode ray tube lamps are arranged in a parallel manner such that the bodies of the light sources are parallel to each other on the bottom plate 212.

The optical member 230 is disposed on an upper end of the sidewall 214 disposed at the edge of the bottom plate 212, and receives and scatters the light generated by the light source 220 to improve the uniformity of the light. In the present embodiment, the optical member 230 includes a first surface 232 facing the light source 220 and a second surface 234 facing the first surface 232 and emitting diffused light.

The warpage suppression member 240 may be formed of the optical member 230 and the bottom surface 212 of the storage container 210 to maintain a gap G between the first surface 232 of the optical member 230. The bottom plate 212 is interconnected. In this case, the bending suppression member 240 may have a thickness as thin as possible to prevent a decrease in luminance due to the blocking of light directed to the optical member 230, and sufficient to withstand the tension generated by the bending of the optical member 230. It is preferable to use a member having rigidity.

The support member 217 serves to prevent the optical member 230 from bending toward the light source 220 due to its own weight.

In the present embodiment, the support member 217 may include, for example, a support plate 217a having a plate shape, a support portion 217b formed on a top surface of the support plate 217a, and a support plate 217a and a support portion 217b. The through hole 217c penetrates. In this embodiment, the support plate 217a is firmly fixed to the bottom plate 212 of the storage container 210 by screws or the like.

An end portion of the supporting portion 217b of the supporting member 217 is in contact with the first surface 232 of the optical member 230, and the supporting plate 217a of the supporting member 217 is fixed to the bottom plate 212 and is bent. The suppressing member 242 is fixed to the bottom plate 212 through the through hole 217c formed in the support member 217.

The display panel 300 is accommodated in the storage container 210. Preferably, the display panel 300 has a substantially rectangular parallelepiped shape, and the display panel 300 is disposed substantially parallel to the bottom plate 212 and disposed on the middle chassis 305. The display panel 300 disposed on the middle chassis 305 is spaced apart from the optical member 230 by a predetermined interval.

The display panel 300 includes a first display substrate 310, a second substrate 320, and a liquid crystal layer 330. In the present embodiment, the first display substrate 310 includes a plurality of thin film transistors (TFTs) and pixels electrically connected to the thin film transistors. The second display substrate 320 is disposed to face the first display substrate 310, and the second display substrate 320 includes a color filter corresponding to the pixel. The liquid crystal layer 330 is interposed between the first and second display substrates 310 and 320.

The display panel 300 generates a full-color image using, for example, the liquid crystal layer 330 that adjusts the light transmitted from the light source 220 and the light transmittance, and the color filter.

As described in detail above, in order to suppress the warpage of the optical member, for example, the diffusion plate, a through hole is formed in the diffusion plate, and the diffusion is performed using the through hole and a wire-shaped warp suppression member inserted into the through hole. Eliminate the warpage of the plate to improve the display quality of the image.

Although the detailed description of the present invention has been described with reference to the embodiments of the present invention, those skilled in the art or those skilled in the art will have the spirit and scope of the present invention as set forth in the claims below. It will be appreciated that various modifications and variations can be made in the present invention without departing from the scope of the art.

Claims (18)

A first surface on which light is incident, a second surface facing the first surface and emitting diffused light, a through hole penetrating through the first and second surfaces, and an inlet of either of the through holes The optical member in which the formed extension part was formed. The optical member according to claim 1, further comprising a bending suppression member having a locking portion that passes through the through hole and is caught by the expansion portion. The optical member according to claim 2, wherein the warpage suppression member is made of a transparent material. An optical body having a first surface on which light is incident and a second surface facing the first surface and emitting diffused light; And And a bending suppression member having an end fixed to the inside of the optical body through the first surface of the optical body. The optical member according to claim 4, wherein the warpage suppression member is made of a transparent material. A storage container including side walls disposed at an edge of the bottom plate to form a bottom plate and a receiving space; A plurality of light sources disposed on an upper surface of the bottom plate to generate light; An optical member supported on an upper end of the sidewall and including a first surface receiving the light generated by the light source and a second surface facing the first surface and emitting diffused light; And And a bending suppression member connecting the optical member and the bottom plate to maintain a constant gap between the bottom plate and the optical member. 7. The backlight assembly of claim 6, wherein the optical member has a first through hole penetrating through the first and second surfaces and having an extension formed at an inlet corresponding to the second surface. 8. The backlight assembly of claim 7, wherein the warpage suppression member comprises a securing wire having a first end and a second end opposite the first end. 10. The backlight assembly of claim 8, wherein the first end passes through the first through hole and the second end includes a locking part that is caught by an extension of the first through hole. 10. The backlight assembly of claim 9, wherein the bottom plate has a second through hole, and the second end is fixed to the bottom plate through the second through hole. The backlight assembly of claim 10, wherein the second end is fixed to a rod-shaped engaging pin disposed outside the bottom plate. The backlight assembly of claim 6, further comprising a support member including a support part in contact with the optical member and a support plate in contact with the bottom plate and fixing the support part. The backlight assembly of claim 12, wherein the support member further comprises a through hole penetrating through the support and the support plate to allow the bending suppression member to pass therethrough. The method of claim 6, wherein the first end of the bending suppression member is fixed to the interior of the optical member through the second surface of the optical member, the second end facing the first end is fixed to the bottom surface Backlight assembly, characterized in that the. The backlight assembly of claim 6, wherein the warpage suppression member is a fixing wire comprising a transparent material. A storage container including side walls disposed at an edge of the bottom plate to form a bottom plate and a receiving space; A plurality of light sources disposed on an upper surface of the bottom plate to generate light; An optical member supported on an upper end of the sidewall and including a first surface receiving the light generated by the light source and a second surface facing the first surface and emitting diffused light; A support member interposed between the bottom plate and the optical member to support the optical member and having a through hole connecting the bottom plate and the optical member; A bending suppression member having one end connected to the optical member and having the other end connected to the bottom plate through the through hole to maintain a constant gap between the bottom plate and the optical member; And And a display panel spaced apart from the optical member and displaying an image through the diffused light emitted from the optical member. The display device of claim 16, wherein the optical member comprises a first through hole through which the bending suppression member passes. 18. The display device according to claim 17, wherein the first through hole formed in the second surface has an expansion portion, and one end of the bending suppression member has a catch portion that is caught by the expansion portion.

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