KR20070034678A - Frame, backlight assembly and display device having same - Google Patents

Abstract

Disclosed is a frame having a lamp fixing portion, a backlight assembly and a display device having the same. The frame includes a first side and a second side. In a frame covering one end of a plurality of lamps and supporting an optical member disposed above the lamps, the first surface supports the optical member. The second surface extends from the first surface, and an insertion portion into which one end of the lamps is inserted, and a lamp fixing portion for fixing the lamp is formed in each insertion portion. As such, it is possible to prevent the bright line defect due to the temperature deviation generated by the lamp fixing portion.

Description

FRAME AND BACK LIGHT ASSEMBLY HAVING THE MOLD FRAME AND DISPLAY DEVICE HAVING THE SAME}

1 is a perspective view showing a frame according to an embodiment of the present invention.

FIG. 2A is an enlarged view of region A of FIG. 1.

2B is an enlarged view of a region A of FIG. 1 according to another exemplary embodiment.

3 is a view showing a fastening state with a lamp to explain the shape of the lamp fixing member according to an embodiment of the present invention.

4 is another view illustrating a fastening state with a lamp in order to explain a shape of a lamp fixing member according to an exemplary embodiment of the present invention.

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

6 is an exploded perspective view of a display device according to another exemplary embodiment.

Explanation of symbols on the main parts of the drawings

100: frame 121: lamp insertion groove

122: lamp fixing portion 140: lamp

300: optical member 310: diffuser plate

320: optical sheet 330: reflector

400: storage container 500: backlight assembly

600: display panel assembly 700: guide frame

800: top chassis

The present invention relates to a frame, a backlight assembly and a display device having the same, and more particularly, to a frame having a lamp fixing structure, a backlight assembly and a display device having the same.

In general, the display device may be defined as a device for interfacing the data processed by the information processing device so that a user can recognize the data. As such a display device, a flat panel display device is widely used for compact size, light weight, and high resolution.

Currently, the flat panel display device most widely used is a liquid crystal display device. The liquid crystal display device performs display using a liquid crystal whose light transmittance is changed according to the intensity of an electric field.

Such a liquid crystal display device is a transmissive liquid crystal display device displaying an image using external light provided from an external light source, a reflective liquid crystal display device displaying an image using natural light, and an image using both external light and natural light. It can be classified into a reflective-transmissive liquid crystal display device.

The transmissive liquid crystal display uses a backlight disposed on the back of the display panel as an external light source, and the backlight assembly employed in the conventional display device includes a direct downward type back light assembly and an edge type backlight according to the arrangement of the light sources. It is divided into an assembly (edge type back light assembly).

In the direct type backlight assembly, a plurality of light sources are disposed under the display panel to provide light to the display panel. In the edge type backlight assembly, a light source is disposed on a side of the light guide plate to provide light to the display panel.

A cold cathode fluorescent lamp (CCFL) is typically used as a light source used in the direct backlight assembly. In the cold cathode fluorescent lamp, a plurality of tubular cold cathode fluorescent lamps are disposed under the display panel to provide high luminance light to the display panel.

In this case, as the plurality of tubular cold cathode fluorescent lamps are configured, the manufacturing cost of the backlight assembly is increased, and the fixing members, for example, holders and the like, are disposed to place each of the tubular cold cathode fluorescent lamps in the backlight assembly. The same fastening members are used at both ends of the tubular cold cathode fluorescent lamp, which increases the manufacturing cost of the backlight assembly.

To solve this problem, a direct backlight assembly using a U-shaped cold cathode fluorescent lamp as a light source has been proposed.

In a structure using a U-shaped cold cathode fluorescent lamp as a light source, a backlight assembly having the same luminance can be manufactured with fewer cold cathode fluorescent lamps than a structure using a plurality of tubular cold cathode fluorescent lamps.

Accordingly, it is possible to prevent the increase in manufacturing cost due to the cold cathode fluorescent lamp, and to prevent the increase in manufacturing cost by reducing the use quantity of the fixing member.

In the structure using the U-shaped cold cathode fluorescent lamp as a light source, a lamp fixing member is attached to the bending portion of the U-shaped cold cathode fluorescent lamp to support the U-shaped cold cathode fluorescent lamp.

However, the lamp fixing member serves as a heat conductor to release heat generated from the bending part to the outside and lower the temperature of the bending part. As the temperature of the bending portion is lowered, a temperature variation is caused inside the U-shaped cold cathode fluorescent lamp. The mercury (Hg) included in the U-shaped cold cathode fluorescent lamp may flow due to a temperature deviation generated inside the U-shaped cold cathode fluorescent lamp.

As the mercury (Hg) flows, a low concentration region in which the concentration of the mercury (Hg) is lowered is formed inside the U-shaped cold cathode fluorescent lamp, and a bright line defect occurs in which the luminance of light emitted from the low concentration region is lowered. In addition, the luminance of the light emitted from the backlight assembly may be lowered, thereby lowering the efficiency of the backlight assembly.

An object of the present invention for solving the above problems is to provide a frame that can be firmly fixed to the lamp.

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

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

In order to achieve the above object, the frame according to an embodiment of the present invention includes a first surface and a second surface. The first surface supports the optical member, the second surface extends from the first surface, and an insertion portion into which one end is inserted and a lamp fixing portion for fixing the lamp are formed in each insertion portion. At this time, at least one surface of the lamp fixing part in contact with the lamp may be formed flat.

In order to achieve another object of the present invention, the backlight assembly according to another embodiment of the present invention includes lamps, optical members and a frame. The lamps generate light. The optical members are disposed above the lamps to improve the brightness characteristic of the light. The frame includes inserts into which end portions of the lamps are inserted, and lamp fixing portions formed at each insert portion and formed at least one surface flat to fix the lamp, and cover the ends of the lamps.

In accordance with still another aspect of the present invention, a display device according to another embodiment of the present invention includes lamps, optical members, a mold frame, and a display panel. Lamps generate light, and optical members are disposed on top of the lamps to improve the brightness characteristic of the light. The frame includes inserts into which one ends of the lamps are inserted, lamp holders formed on each insert and having at least one flat surface to secure the lamp, and cover one end of the lamps. The display panel is disposed above the optical members to display an image using light passing through the optical member.

According to such a frame, the backlight assembly and the display device having the same, it is possible to prevent the bright line defect of the backlight assembly by preventing the problem of temperature deviation caused by the fixing unit for supporting the lamp.

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

1 is a perspective view showing a mold frame according to an embodiment of the present invention.

Referring to FIG. 1, a mold frame 100 according to an exemplary embodiment of the present invention may include a lamp fixing part fixing a first surface 110 to support optical members (not shown) and lamps (not shown). And a second surface 120 on which 122 is formed. The lamp fixing part 122 formed on the second surface 120 is spaced apart from a connection portion between the first surface 110 and the second surface 120 to separate the lamps from the optical members.

In addition, the mold frame 100 may further include a third surface 130 extending from the first surface 110 to face the second surface 120.

Specifically, when the mold frame 100 includes the third surface 130, the third surface 130 is in contact with the inner wall of the storage container (not shown) in which the mold frame 100 is accommodated, and thus the mold frame 100. Support 100. Preferably, the third surface 130 is formed perpendicular to the bottom surface of the storage container so as to be parallel to the inner wall of the storage container.

In addition, the mold frame 100 may extend from one surface of the second surface 120 and the third surface 130 to form a fourth surface 140 and a fifth surface protruding from the fourth surface 140. 150 may be further included.

In detail, when the mold frame 100 includes the fourth surface 140, the fourth surface 140 is in contact with an inner wall of a storage container (not shown) in which the mold frame 100 is accommodated, and thus the mold frame 100. Support 100. Preferably, the fourth surface 140 is formed perpendicular to the bottom surface of the storage container so as to be parallel to the inner wall of the storage container. In addition, the fifth surface 150 allows the mold frame 100 to be fixed to the inner wall of the storage container. In this case, the fifth surface 150 may further include a fixing hole 151 to be fixed to the inner wall of the storage container.

The first surface 110 extends from the second surface 120 or the third surface 130 and supports the optical members. The first surface 110 preferably extends in a direction perpendicular to the third surface 130. Accordingly, the first surface 110 is formed horizontally with the bottom surface of the storage container to support the optical members.

The second surface 120 extends from the first surface 110 and faces the third surface 130. One end of the lamps is disposed in a space (not shown) defined by the first to third surfaces 110, 120, and 130. In this case, light generated at one end of the lamps is shielded by the mold frame 100.

In addition, the second surface 120 may be formed to have a predetermined inclined surface, thereby reflecting light emitted from the lamps in an upward direction to further improve luminance characteristics of the backlight assembly. The inclined surface may further include a reflective member to further improve the luminance characteristic of the backlight assembly.

Lamp insertion grooves 121 are formed on the second surface 120 to insert one end of the lamps in a space defined by the first to third surfaces 210, 220, and 230. In addition, lamp fixing grooves 122 supporting the lamps are formed in the lamp insertion grooves 121, respectively.

The lamp insertion groove 121 is a through-hole formed in, for example, a quadrangular shape on the second surface 120.

The lamp insertion groove 121 and the lamp fixing part 122 will be described in more detail as follows.

FIG. 2A is an enlarged view of region A of FIG. 1. 2B is an enlarged view of a region A of FIG. 1 according to another exemplary embodiment.

1 and 2A, a plurality of lamp insertion grooves 121 are formed in the second surface 120 of the mold frame 100, and lamp fixing portions 122 are formed in the lamp insertion grooves 121, respectively. Is formed.

The lamp insertion groove 121 is directed toward the first surface 110 at one end of the second surface 120, that is, at one end contacting the bottom surface of the storage container (not shown) in which the mold frame 100 is accommodated. The through hole is formed to be spaced apart a predetermined distance, the lamp insertion groove 121 is formed to have a square shape, for example.

The lamp fixing part 122 extends from a part of the second surface 120 and is formed in the area of the lamp insertion groove 121. Preferably, the lamp fixing part 122 is formed to protrude from the lower surface to the upper surface of the surface formed by the lamp insertion groove 121. However, the lamp fixing part 122 may protrude from the upper surface to the lower surface, the left surface to the right surface, or the right surface to the left surface, and the present invention is not limited to the embodiment.

When the lamp fixing part 122 is configured as a U-shaped cold cathode fluorescent lamp, two lamp fixing parts 122 supporting the lamp 140 are formed in one lamp insertion groove 121. .

The lamp fixing part 122 includes an inner part 122a through which the lamp 140 is inserted and in contact with the lamp 140, and an opening 122b formed to insert the lamp 140.

The inner part 122a has an opening 122b through which the lamp 140 is inserted, and the inner part 122a has a predetermined elasticity due to its shape and material including the opening 122b. For example, polycarbonate may be used as the material of the frame 100, and the lamp fixing part 122 may be formed of polycarbonate in the same manner. In the present embodiment, the frame 100 uses polycarbonate, but a resin material capable of injection molding may be used, and the present invention is not limited to the embodiment.

As the lamp 140 is brought into contact with the opening 122b of the lamp fixing part 122 and the lamp 140 is urged toward the inner part 122a, the opening 122b is expanded to a predetermined size by elasticity and the lamp 140 ) Is inserted into the inner portion 122a.

1 and 2B, the lamp fixing part 122 may further include a guide part 122c bent at a predetermined slope so that the lamp 140 is mounted on the inner part 122a. . The guide part 122c guides the insertion so that the lamp 140 is mounted on the inner part 122a. To this end, the guide portion 122c extends outward from the end of the opening 122b. When the guide portion is pressurized while the lamp 140 is in contact with the opening 122b, the guide 140 prevents the lamp 140 from being separated from the opening 122b, thereby preventing the lamp fixing portion 122 from the lamp 140. The convenience of the fastening process is aimed at. At this time, the lamp fixing part 122 is a bending part 241 of the U-shaped cold cathode fluorescent lamp when the lamp 140 is inserted into the lamp insertion groove 121, as shown in Figure 2a is a lamp fixing part ( 122) When the lamp 140 is inserted in the upper portion and presses the lamp 140 in the direction of the inner portion 122a, the guide portion 122c may not be formed.

The inner part 122a expands at the same time as the opening part 122b when the lamp 140 is disposed in the opening part 122b, and the lamp 140 seated on the inner part 122a is extended as the inner part 122a is extended. It is pressed by the restoring force by the elastic force generated and fixed to the inner part 122a.

In this embodiment, the length L1 from the top surface of the lamp insertion groove 121 to the lamp 140 and the length L2 of the lamp insertion groove 121 and the pitch between the lamp diameter D and the lamp 140. There is a relation between (P) as follows.

L1〉 D

The length L1 to the lamp 140 should be larger than the lamp diameter D. That is, the width of the lamp insertion groove 121 should be larger than twice the diameter of the lamp. In order to insert the lamp 140 into the lamp insertion groove 121 and fix it in this way, the length L1 to the lamp 140 is larger than the lamp diameter D, and the lamp 140 has a lamp insertion groove ( 120).

L2〉 P + thickness of lamp fixing part 122

The length L2 of the lamp insertion groove 121 should be greater than the length P plus the thickness of the lamp diameter D and the lamp fixing part 122 between the lamps 140. That is, when the pitch P between the lamps 140 and the thickness of the lamp fixing part 122 are added, the minimum value of the length of the lamp insertion groove 121 is obtained. In other words, in order to securely insert and fix the lamp 140 into the lamp insertion groove 121, at least as much as the length L2 of the pitch P between the lamps 140 plus the thickness of the lamp fixing part 122. Only when secured can the lamp 140 be inserted into the lamp insertion groove 121.

3 is a view illustrating a fastening state with a lamp to explain the shape of the lamp fixing part according to an embodiment of the present invention, Figure 4 is a view for explaining the shape of the lamp fixing part according to an embodiment of the present invention Another view showing the fastening state with the lamp.

1 to 3, the lamp fixing part 122 is formed to have a thickness substantially the same as the thickness of the second surface 120, and the inner part 122a of the lamp fixing part 122 has a central portion C of the thickness. ) Is formed to protrude in the direction of the lamp 140 which is fastened relative to both ends E1 and E2 of the thickness, that is, the surface contacting the lamp 140 has a convex shape. The shape of the inner portion 122a may be formed in a convex shape in which the central portion C of the thickness is protruded compared to the both ends E1 and E2 of the thickness, and the shape in which the central portion C and the both ends E1 and E2 are connected is various. Can be formed.

As shown in FIG. 4, the inner part 122a forms a flat shape on the left, right, and bottom sides of the lamp 140 to reduce the area of contact with the outer circumferential surface of the lamp 140. The inner portion 122a has a predetermined elasticity when the lamp 140 is inserted, and the lamp 140 has a portion of the outer circumferential surface of the lamp 140 due to the restoring force caused by the elasticity generated in the short axis direction D1 of the inner portion 122a. Only the contacts are pressed and supported.

The larger the area where the inner portion 122a is in contact with the outer circumferential surface of the lamp 140, the lower the temperature of the lamp 140 at the contacted position, and a temperature deviation occurs in the lamp 140. At this time, the distribution of mercury (Hg) included in the lamp 30 is non-uniform. As the distribution of mercury (Hg) becomes nonuniform, the luminance of light emitted from the portion at which the concentration of mercury (Hg) is lowered becomes low, so that a bright line defect occurs. This may lower the luminance characteristic of the backlight assembly using the lamp fixing part 122.

The inner part 122a is formed to have a flat shape, whereby the lamp 140 and the non-contact area NTA are formed in some areas that are not in direct contact with the major axis direction D2 of the inner part 122a.

Therefore, the amount of heat emitted from the lamp 140 by the lamp fixing part 122 may be reduced by minimizing the contact area with the lamp 140 by the shape of the inner part 122a of the lamp fixing part 122. As a result, a non-uniform distribution of mercury (Hg) included in the lamp 140 is prevented, and a problem of bright line defects caused by lowering luminance of light emitted from a portion at which mercury (Hg) concentration is lowered is solved.

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

In the present embodiment, since the structure of the frame has the same structure as in the embodiment, the same reference numerals are used for the same components, and detailed description thereof will be omitted.

Referring to FIG. 5, the backlight assembly 500 according to another embodiment of the present invention may include a frame 100, a plurality of lamps 140, optical members 300, a storage container 400, and a guide frame 700. ). The optical members 300 include a diffusion plate 310, an optical sheet 320, and a reflector plate 330. In addition, the lamps 140 are configured as, for example, a U-shaped cold cathode fluorescent lamp.

The storage container 400 includes a bottom surface 410 and a sidewall 420 that is bent and extended from the bottom surface 410, and includes a frame 100 in a storage space defined by the bottom surface 410 and the sidewall 420. ), A plurality of lamps 140 and the optical member 300 is received.

The diffusion plate 310 and the optical sheet 320 are provided on the plurality of lamps 140. The diffusion plate 310 and the optical sheet 320 diffuse light emitted from the plurality of lamps 140 to improve luminance uniformity and viewing angle of the backlight assembly 500.

The reflective plate 330 is disposed between the plurality of lamps 140 and the bottom surface 410. The reflector 330 reflects light leaked from the plurality of lamps 140 toward the diffuser plate 310, thereby improving light efficiency of the backlight assembly 500.

The frame 100 includes a first side frame 101 and a second side frame 102. The first side frame 101 covers the bending portion 141 of the plurality of lamps 140, and the second side frame 102 has the ends of the straight portions 142, 143 of the plurality of lamps 140. That is, the first end 142a and the second end 143a are covered.

The first side frame 101 is formed in the same manner as the frame described with reference to FIGS. 1 to 4. Therefore, detailed description thereof will be omitted.

The second side frame 102 may be formed in the same shape as the first side frame 101. That is, insertion parts (not shown) into which the first and second ends 142a and 143a are inserted are formed in the second side frame 102, and the insertion parts have the same shape as the first side frame 102. The lamp fixing portion may be formed.

In addition, when the connector for supplying external power to the first and second ends 142a and 143a is formed in a holder shape, the second side frame 102 may have a structure in which the lamp fixing part is omitted.

In addition, in another embodiment of the present invention, the frame 100 is represented as an independent component of the backlight assembly 500, but the frame 100 may be integrally formed with the storage container 400.

That is, the side walls 420 of the side walls 420 of the storage container 400 that face the ends 142a and 143a of the bending portions 141 of the lamp 140 or the straight pipe portions 142 and 143 of the lamp 140 are framed. By comprised with the 3rd surface 130 of 100, the storage container 400 and the mold frame 100 can be formed integrally.

Accordingly, the first surface 110 and the second surface 120 of the frame 100 extend from the side wall 420 of the storage container 400, and the lamp fixing portion 122 is formed on the second surface 120. By forming, it is possible to obtain the same effect as the frame formed independently.

The guide frame 700 fixes the diffusion plate 310 and the optical sheet 320 to a designated position, and guides the storage position of a liquid crystal display panel (not shown) to be described later.

6 is an exploded perspective view of a display device according to another exemplary embodiment.

Referring to FIG. 6, the display device 900 according to another embodiment of the present invention includes a backlight assembly 500 that generates light and a display panel assembly 600 that displays an image using light.

The backlight assembly 500 generates light and provides the light to the display panel assembly 600. Since the backlight assembly 500 has been described above with reference to FIGS. 1 to 5, detailed description thereof will be omitted.

The display panel assembly 600 includes a liquid crystal display panel 610 for displaying an image, data and gate printed circuit boards 620 and 630, and data and gate flexible films 640 and 650. The data and gate printed circuit boards 620 and 630 are electrically connected to the liquid crystal display panel 610 through the data and gate flexible films 640 and 650. Each of the data and gate flexible films 640 and 650 converts and outputs control signals provided from the data and gate printed circuit boards 620 and 630 into driving signals for driving the liquid crystal display panel 610 and outputs the gates. The driving chips 641 and 651 are mounted.

The liquid crystal display panel 610 may include a thin film transistor (hereinafter, referred to as TFT) substrate 611, a color filter substrate 612 coupled to the TFT substrate 611, and a TFT substrate 611 and a color filter substrate ( And a liquid crystal layer 613 interposed therebetween.

The TFT substrate 611 is a transparent glass substrate on which a switching element TFT (not shown) is formed in a matrix form. Data and gate lines are respectively connected to the source and gate terminals of the TFTs, and a pixel electrode (not shown) made of a transparent conductive material is connected to the drain terminal.

The color filter substrate 612 is a substrate on which an RGB pixel (not shown) which is a color pixel and a common electrode (not shown) made of a transparent conductive material are formed.

The display device 900 further includes a top chassis 800.

The top chassis 800 is fastened to the storage container 400 while surrounding the edge of the liquid crystal display panel 610 to fix the liquid crystal display panel 610 to the upper portion of the backlight assembly 500.

The top chassis 800 prevents the liquid crystal display panel 610 from being damaged by an external impact and prevents the liquid crystal display panel 610 from being separated from the backlight assembly 500.

Although the present invention has been described with reference to a frame applicable to a U-shaped cold cathode fluorescent lamp, a backlight assembly and a display device having the same, the frame may be equally applicable to a tubular cold cathode fluorescent lamp in addition to a U-shaped cold cathode fluorescent lamp. Is obvious to those skilled in the art.

According to the present invention as described above, by using the lamp fixing member formed in the frame and the straight portion connected to the bending portion of the U-shaped cold cathode fluorescent lamp is arranged in parallel with each other, to prevent the current leakage phenomenon and the U-shaped cold cathode The efficiency of the backlight assembly using the fluorescent lamp can be improved.

In addition, by using a lamp fixing member formed on the frame to prevent the temperature deviation caused by the fixing member for supporting the U-shaped fluorescent lamp, it is possible to prevent the bright line of the backlight assembly, to display the display device using the same Can improve the quality.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed within the scope of the present invention without departing from the spirit and scope of the invention described in the claims below. I can understand that you can.

Claims (25)

A frame covering one end of a plurality of lamps and supporting an optical member disposed on the lamps, A first surface supporting the optical member; And And a second surface extending from the first surface and having an insertion portion into which one end of the lamps are inserted, and a lamp fixing portion for fixing the lamp to each insertion portion. The frame of claim 1, wherein the lamp fixing part is flat with at least one surface in contact with the lamp. The frame of claim 1, further comprising a third surface extending from the first surface and facing the second surface. The frame of claim 1, wherein the lamp fixing part extends from a part of the second surface and is formed in a space defined by the inserting part. The frame as claimed in claim 4, wherein the lamp fixing part is formed in an upward direction from a downward direction of the insertion part. The frame as claimed in claim 5, wherein the insertion portion has a quadrangular shape formed on the second surface. The frame according to claim 1, wherein the lamp fixing part includes an inner part on which the lamp is mounted. 8. The frame as claimed in claim 7, wherein the lamp fixing part further comprises a guide part bent at a predetermined slope so that a lamp is mounted on the inner part. The frame of claim 1, wherein the frame comprises an elastic material. 10. The frame according to claim 9, wherein the frame is a mold frame formed of polycarbonate. The frame according to claim 1, wherein a width of the insertion part is more than twice the diameter of the lamp. The frame according to claim 1, wherein the length of the insert is equal to or greater than the sum of the pitch between the lamps and the thickness of the lamp fixing parts. 2. The frame according to claim 1, wherein the width of the insertion portion is at least twice the diameter of the lamp, and the length of the insertion portion is at least the sum of the pitch between the lamps and the thickness of the lamp fixing portion. Lamps for generating light; Optical members disposed above the lamp to improve brightness characteristics of the light; And And inserting parts into which end parts of the lamps are inserted, and lamp fixing parts formed on each inserting part, and having at least one surface flat to fix the lamps, wherein the frame covers the end parts of the lamps. Backlight assembly. The method of claim 14, wherein the frame is A first surface supporting the optical members; And And a second surface extending from the first surface and having the lamp fixing member formed thereon. The backlight assembly of claim 15, wherein the frame further comprises a third surface extending from the first surface to face the second surface. The backlight assembly of claim 14, wherein the lamp fixing part is formed in an upward direction from a downward direction of the insertion part. The backlight assembly of claim 17, wherein the lamp fixing part includes an inner part to which the lamp is mounted, and a surface on which the lamp is mounted is formed in a convex shape. 15. The backlight assembly of claim 14, wherein the lamp is a U-shaped lamp. 15. The backlight assembly of claim 14, wherein the lamp is a tubular lamp. 15. The backlight assembly of claim 14, wherein the width of the insertion portion is at least twice the diameter of the lamp. 22. The backlight assembly of claim 21, wherein the length of the insert is equal to or greater than the sum of the pitch between the lamps and the thickness of the lamp fixing part. A plurality of lamps for generating light; Optical members disposed on the lamps to improve brightness characteristics of the light; A frame covering one end of the lamps, including insertion parts into which one ends of the lamps are inserted and lamp fixing parts formed on each insertion part and having at least one flat surface to fix the lamps; And And a display panel disposed on the optical members to display an image by using light passing through the optical member. 24. The display device according to claim 23, wherein the width of the insertion portion is at least twice the diameter of the lamp. The display device of claim 24, wherein a length of the insertion part is equal to or more than a sum of a pitch between the lamps and a head of the lamp fixing part.

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