KR102436800B1 - Backlight unit and Liquid crystal display including the same - Google Patents

Abstract

A backlight unit and a liquid crystal display including the same according to the present invention include: a bottom cover; a reflector positioned on the bottom cover; at least one light source positioned on the reflector; at least one or more optical sheets positioned on the reflector; and a backlight unit formed between the reflection plate and the bottom cover and including a fixing structure for fixing the reflection plate.

Description

Backlight unit and liquid crystal display including the same

The present invention relates to a backlight unit and a liquid crystal display including the same.

The present invention relates to a backlight unit and a liquid crystal display including the same, and more particularly, to a reflective plate fixing structure included in a backlight unit of a direct-type liquid crystal display.

Liquid crystal display (LCD) is a situation in which the application range is expanding due to features such as light weight, thin shape, low power operation, full color, and high resolution implementation. Currently, liquid crystal displays are used in computers, notebook computers, PDAs, telephones, TVs, audio and video equipment, and the like. Since such a liquid crystal display cannot emit light by itself, a light source such as a backlight is required.

In general, the backlight of a liquid crystal display is a light source, such as a cylindrical fluorescent lamp or LED (Light Emitting Diode), such as a Cold Cathode Fluorescent Lamp (CCFL), a Hot Cathode Fluorescent Lamp (HCFL), or an External Electrode Fluorescent Lamp (EEFL). Devices, EL (Electro Luminescence) devices, etc. are mainly used, and there are two types, edge-lighting and direct-lighting, depending on the type of light source arrangement. The edge-lighting method is a method in which a light source is installed at the edge of the LCD panel, and the light generated from the light source is irradiated onto the LCD panel through a transparent light guide plate located below the LCD panel. On the other hand, the direct-lighting method is a method of directly irradiating the entire surface of the LCD panel by placing a plurality of light sources under the LCD panel. This can ensure high luminance, and is commonly used to irradiate light to large and medium-sized LCD panels.

In a backlight unit using an edge-lighting method, a reflector is generally disposed under the light source to diffuse the light source. At this time, a fixing structure is used to fix the reflector and the bottom cover. In this case, an inclined surface of the reflector is disposed on the edge of a liquid crystal display (LCD), and the inclined surface also reflects light. The reflected light has a non-uniform light efficiency due to the type of light source, refraction of light, and diffuse reflection. Thus, there is a problem that affects the image quality of the edge portion of the liquid crystal display (Liquid Crystal Display: LCD).

An object of the present invention is to solve the disadvantages of the conventional direct-type backlight unit's coupling structure between the reflector and the bottom cover.

An object of the present invention is to provide a fixing structure that increases the coupling force between the reflector and the bottom cover, and can adjust the inclined surface of the reflector.

The backlight unit of the present invention for solving the problems of the prior art as described above includes a bottom cover, a reflective plate positioned on the bottom cover, at least one light source positioned on the reflective plate, and located on an inclined surface of the reflective plate, the reflective plate and It may include a backlight unit including a fixing structure for fixing the bottom cover.

In addition, the liquid crystal display device of the present invention includes a bottom cover, a reflective plate positioned on the bottom cover, at least one light source positioned on the reflective plate, at least one optical sheet positioned on the reflective plate, and positioned on the optical sheet and a liquid crystal display device positioned on an inclined surface of the liquid crystal panel and the reflecting plate and including a fixing structure for fixing the reflecting plate and the bottom cover.

The assembly structure of the reflecting plate and the bottom cover of the present invention has the effect of being more firmly coupled than the conventional hook-type fixing structure.

In addition, the present invention has an effect that the inclined surface of the reflecting plate of the backlight unit can be adjusted by the fixing structure.

In addition, the present invention has the effect that it is possible to improve the image quality of the edge of the liquid crystal display device.

In addition, the present invention has the effect of improving the aesthetic design of the product by eliminating the conventional Hook-type fixing structure to make the appearance of the rear surface possible.

1 is a cross-sectional view of a liquid crystal display device according to a first embodiment of the present invention;
Figure 2 is a perspective view of the reflecting plate fixing structure of the first embodiment of the present invention.
Figure 3 is a partial cross-sectional view of the reflecting plate fixing structure of the first embodiment of the present invention.
4 is a cross-sectional view of a liquid crystal display device according to a second embodiment of the present invention.
5 is a perspective view of a reflective plate fixing structure according to a third embodiment of the present invention.
6 is a perspective view of a reflective plate fixing structure according to a fourth embodiment of the present invention.

Hereinafter, the embodiments will be clearly revealed through the accompanying drawings and the description of the embodiments. In the description of an embodiment, each layer (film), region, pattern or structure is “on” or “under” the substrate, each layer (film), region, pad or pattern. In the case of being described as being formed on, "on" and "under" include both "directly" or "indirectly" formed through another layer. do. In addition, the criteria for the upper / upper or lower / lower of each layer will be described with reference to the drawings.

In addition, terms including ordinal numbers such as first, second, etc. used in this specification may be used to describe various components, but since the terms are used only for the purpose of distinguishing one component from other components, the above configuration Elements are not limited to the above terms.

In addition, in the drawings, the size is exaggerated, omitted, or schematically illustrated for convenience and clarity of description. Also, the size of each component does not fully reflect the actual size. Also, like reference numerals denote like elements throughout the description of the drawings.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

1 is a cross-sectional view of a liquid crystal display including a direct-type backlight unit according to a first embodiment of the present invention.

As shown, the liquid crystal display according to the first embodiment of the present invention may include a backlight unit and a liquid crystal panel 70 .

The backlight unit may include a bottom cover 20 , a reflective plate 40 , a fixed structure 30 , a plurality of light sources 10 , an optical sheet 60 , and a top cover 50 .

The bottom cover 20 may have a box shape and an open top. However, the shape of the bottom cover 20 is not limited thereto. The bottom cover 20 may accommodate the backlight unit and the liquid crystal panel 70 . The bottom cover 20 may support the optical sheet 60 . The bottom cover 20 may be coupled to the top cover 50 . The bottom cover 20 may accommodate a plurality of light sources 10 . In addition, it may serve to accommodate the components of the entire backlight unit.

The reflector 40 may be disposed on the bottom cover 20 . The reflector 40 may be supported by the bottom cover 20 . The reflector 40 may include a flat portion 41 and an inclined portion 42 .

The flat part 41 may be disposed on the bottom cover 20 . The flat portion 41 may be disposed in the central region of the bottom cover 20 . The light source 10 may be accommodated in the flat portion 41 . The inclined portion 42 may be formed at an edge of the flat portion 41 . The inclined portion 42 may be formed at both ends of the flat portion 41 . The inclined portion 42 may be formed in a inclined shape with a predetermined angle. The inclined portion 42 may be supported by the fixing structure 30 . The inclined portion 42 may be spaced apart from the bottom cover 20 to have a predetermined space. The reflector 40 may have a light collecting pattern (not shown). A light collecting pattern may be formed on an upper surface or a lower surface of the inclined portion 42 .

The light collecting pattern includes a triangular prism pattern. The light collecting pattern may have a hemispherical pattern. The condensing pattern may be formed on the inclined portion 42 having the condensing pattern as a double layer. The shape of the condensing pattern is not limited and can be variously changed. The light efficiency of the light source 10 may be increased by the light collection pattern.

The reflector 40 may be formed by coating a material having good thermal conductivity, such as aluminum, with a material having good reflectivity, such as silver, titanium, and polymer.

The reflector 40 may include polycarbonate (PC), polyethylene terephthalate (PET), and polymethylmethacrylate (PMMA).

The reflector 40 may reflect the light generated from the light source 10 toward the liquid crystal panel. The reflector 40 may serve to reduce light loss by reflecting light that is not directed to the optical sheet 60 in the backlight unit.

The fixing structure 30 may be disposed between the reflective plate 40 and the bottom cover 20 . The fixing structure 30 may support the inclined portion 42 of the reflective plate 40 . The fixing structure 30 will be described in detail later.

The light source 10 may be formed on the reflective plate. In addition, the light source 10 may be formed to pass through the reflective plate 40 .

The light source 10 is a light emitting body that emits light, and is a cylindrical fluorescent lamp, such as a Cold Cathode Fluorescent Lamp (CCFL), a Hot Cathode Fluorescent Lamp (HCFL), or an External Electrode Fluorescent Lamp (EEFL), or a Light Emitting Diode (LED) device, EL. (Electro Luminescence) device, etc. may be used.

Recently, a light emitting diode (LED) module is widely used, and the LED (light emitting diode) module may include a light emitting diode chip (LED) and a printed circuit board (PCB).

An LED chip (Light Emitting Diode Chip) includes a p-type semiconductor layer, an active layer, and an n-type semiconductor layer. Preferably, the p-type semiconductor layer and the n-type semiconductor layer include a group 3 and group 5 compound such as gallium nitride (GaN), aluminum nitride (AlN), and indium nitride (InN). In the LED chip (Light Emitting Diode Chip), electrons and holes generated in the p-type semiconductor layer and the n-type semiconductor layer meet in the active layer to generate light.

The LED chip (Light Emitting Diode Chip) is composed of a blue LED chip or an ultraviolet LED chip, or at least one or more of a red LED chip, a green LED chip, a blue LED chip, a yellow green LED chip, and a white LED chip. It may be configured in the form of a package combining the .

In addition, the white LED may be implemented by combining yellow phosphor on the blue LED or using red phosphor and green phosphor on the blue LED at the same time. In addition, it can be implemented by using yellow phosphor, red phosphor, and green phosphor simultaneously on the blue LED.

As the printed circuit board (PCB), various types of printed circuit boards (PCB) may be used. For example, a metal core printed circuit board (MCPCB) may be used as a metal PCB having an excellent heat dissipation function using a metal material as a base, but is not limited thereto. As such, when the MCPCB is used as a printed circuit board (PCB), heat generated from a light emitting diode (LED) can be effectively dissipated. If necessary, a flexible printed circuit board (FPCB), which is a board having flexibility, may be used. Although not shown in the drawings, a printed circuit board (PCB) includes a driving circuit for driving the light source 10 . In general, in a direct-type backlight unit and a liquid crystal display (LCD) including the same, the light source 10 is positioned on the reflective plate 40 , but the position may be changed in some cases.

The optical sheet 60 may include a diffusion sheet 61 , a prism sheet 62 , and a reflective dual brightness enhancement film (DBEF) 63 .

The optical sheet 60 may be disposed on the bottom cover 20 . The optical sheet 60 may be disposed on the reflective plate 40 . The optical sheet 60 may be supported by the bottom cover 20 . The rear surface of the optical sheet 60 may be supported by the top cover 50 . The optical sheet 60 may be supported by a combination of the top cover 50 and the bottom cover 20 .

The optical sheet 60 may include a diffusion sheet 61 and a prism sheet 62 and a reflective polarizing film (Dual Brightness Enhancement Film: DBEF) 63 are sequentially stacked.

The diffusion sheet 61 includes one manufactured by distributing spherical seeds made of an acrylic resin on a base film mainly made of polyester. Although the diffusion sheet 61 is stacked in one layer in the drawing, it may be stacked in two or more layers depending on the size of the liquid crystal display device or the type of backlight. In this case, the number of diffusion sheets 61 is not limited. The diffusion sheet 61 may diffuse the light reflected from the reflector 40 to make the luminance of the light constant.

The prism sheet 62 may be disposed on the diffusion sheet 61 . The prism sheet 62 may be manufactured by forming regular prisms with an acrylic resin on a base film mainly made of polyester. In this case, the prism has an isosceles triangular shape extending in the x-direction and the y-direction, and condenses the light in the x-direction and the y-direction, so that the light can be incident perpendicularly to the surface of the liquid crystal panel 70 .

The prism sheet 62 may collect light diffused from the diffusion sheet 61 . Two or three or more prism sheets 62 may be stacked.

The reflective polarizing film (Dual Brightness Enhancement Film: DBEF) 63 may be disposed on the prism sheet 62 . The reflective polarizing film (Dual Brightness Enhancement Film: DBEF) 63 may have a diffusion layer disposed above and below the reflective polarizing film (Dual Brightness Enhancement Film: DBEF) 63 .

The reflective polarizing film (Dual Brightness Enhancement Film: DBEF) 63 may include a multilayer film manufactured by alternately stacking two types of polymer layers having different refractive indices. The reflective polarizing film (Dual Brightness Enhancement Film: DBEF) 63 may selectively reflect and transmit light through a polarization separation function. The reflective polarizing film (Dual Brightness Enhancement Film: DBEF) 63 may transmit only light in a vibration direction parallel to one transmission axis and reflect other light.

Light reflected from the reflection plate 70 may be diffused by the diffusion sheet 61 . The diffused light may be condensed by the prism sheet 62 . It may proceed vertically toward the liquid crystal panel 70 condensed by the prism sheet 62 .

In addition, the reflective polarizing film (Brightness Enhancement Film: DBEF) 63 may improve luminance by re-reflecting light that has not passed through the liquid crystal module 70 and reusing it. At this time, the number of the diffusion sheet 61 and the prism sheet 62 and the reflective polarizing film (Dual Brightness Enhancement Film: DBEF) 63 is not limited.

The top cover 50 may be disposed on the bottom cover 40 .

The top cover 50 may be located on the side of the optical sheet 60 and the liquid crystal panel 70 . The top cover 50 may be combined with the support main and bottom cover 50 in the shape of a square frame surrounding the edges of the liquid crystal panel 70 and the backlight unit.

The top cover 50 may combine the liquid crystal panel 70 and the optical sheet 60 . The top cover 50 may be combined with the bottom cover 50 to integrally fix the backlight unit and the liquid crystal panel 70 .

The liquid crystal panel 70 includes a color filter substrate (CF) 71 , a thin film transistor (TFT) substrate 72 , a liquid crystal layer, and the like.

The CF substrate 71 is disposed to be spaced apart from the TFT substrate 72 by a predetermined interval. The liquid crystal layer may be injected between the CF substrate 71 and the TFT substrate 72 .

In the TFT substrate 72 , a thin film transistor (TFT), which is a switching element, may be formed in a matrix form. Data and gate lines may be connected to source and gate terminals of the TFTs, respectively, and a pixel electrode made of indium thin oxide (ITO), which is a transparent conductive material, may be connected to a drain terminal.

The CF substrate 71 is a substrate in which red, blue, and green color pixels, which are color pixels expressed as predetermined colors through the light emitted from the light source 10, are formed by a thin film process. A common electrode made of a transparent conductive material, for example, indium thn oxide (ITO) or indium zinc oxide (IZO) may be formed on the entire surface of the CF substrate 71 .

In the liquid crystal panel 70 having the above structure, when power is applied to the gate terminal of the TFT substrate 72, an electric field is formed between the pixel electrode and the common electrode, and by this electric field, the TFT substrate 72 and the CF substrate 71 ) is changed, and the transmittance of the light supplied from the light source 10 is changed to obtain a desired grayscale image.

2 is a perspective view of a reflective plate fixing structure of the first embodiment of the present invention, and FIG. 3 is a partial cross-sectional view of the reflective plate fixing structure of the first embodiment of the present invention.

2 and 3 , the fixing structure 30 may include an adjustment part 31 , a protrusion part 32 , and a support part 33 .

The fixing structure 30 may be disposed between the reflective plate 40 and the bottom cover 20 . The fixing structure 30 may be disposed between the bottom cover 20 and the inclined portion 42 of the reflective plate 40 . The fixing structure 30 may be disposed in a predetermined space in which the inclined portion 42 of the reflective plate 40 is spaced apart from the bottom cover 20 . The fixing structure 30 may include an adjustment part 31 , a protrusion part 32 , and a support part 33 . The fixing structure 30 may change the curvature of the inclined portion 42 . Due to the changed curvature of the inclined portion 42, the image quality of the edge portion of the liquid crystal display may be improved. In addition, due to the fixing structure 30 , the inclined portion 42 has a curved surface, so that the light efficiency of the light source 10 can be improved.

The adjusting unit 31 may be disposed on the reflecting plate 40 . The adjusting part 31 may be disposed on the inclined part 42 . The adjusting unit 31 may have a square plate shape. Alternatively, it may have a circular or triangular shape. In this case, the shape of the adjusting unit 31 is not limited thereto. The adjusting unit 31 may be supported by the reflecting plate 40 . The adjustment part 31 may be supported by the inclined part 42 .

The adjustment unit 31 may be able to adjust the angle. The curvature of the inclined portion 42 of the reflector 40 may be changed due to the angle adjustment of the adjustment unit 31 . Due to the changed curvature of the inclined portion 42 , the image quality of the edge portion of the liquid crystal display may be improved. The inclined portion 31 may reflect the light reflected by the flat portion 41 of the reflective plate 40 toward the optical sheet 60 and the liquid crystal panel 70 . The image quality of the edge portion of the liquid crystal display may be improved due to the light reflected by the control unit 31 .

The protrusion 32 may be connected to the adjustment part 31 . The protrusion 32 may support the adjustment part 31 . The protrusion 32 may pass through the reflective plate 40 . The protrusion 32 may be disposed in a space in which the reflective plate 40 and the bottom cover 20 are spaced apart from each other.

The support part 33 may be connected to the protrusion part 32 . The support part 33 may be disposed on the bottom cover 20 . The support part 33 may be supported by the bottom cover 20 . The support part 33 may be formed in close contact with the reflective plate 40 . The support part 33 may be formed in a space in which the bottom cover 20 and the reflective plate 40 are spaced apart from each other. The support part 33 may be disposed to be spaced apart from the inclined part 42 .

The fixing structure 30 may be made of a resin material. The fixing structure 30 may be made of a light-transmitting material through which light can partially pass. For example, it may include acrylic, polycarbonate (PC), and polymethylmethacrylate (PMMA). However, the material of the fixing structure 30 is not limited thereto.

The fixing structure 30 may include a light collecting pattern (not shown). The control unit 31 of the fixing structure 30 may include a light collecting pattern on the upper surface or the lower surface.

The light collecting pattern may have a triangular prism pattern. The light collecting pattern may have a hemispherical pattern. The light collecting pattern may include having the light collecting pattern as a double layer on the upper or lower surface of the control unit 31 . In this case, the shape of the light collecting pattern is not limited and can be variously changed. In addition, light is condensed by the condensing pattern of the control unit 31 to improve the light efficiency of the light source 10 .

4 is a cross-sectional view of a liquid crystal display according to a second exemplary embodiment of the present invention.

As shown in FIG. 4 , the fixing structure 130 according to the second embodiment of the present invention may include a first fixing structure 131 and a second fixing structure 132 . The reflector 40 may be divided into a first area adjacent to both ends of the planar part 41 and a second area excluding the first area. A first fixing structure 131 may be disposed in a first area of the reflective plate 40 . A second fixing structure 132 may be disposed in the second area. At this time, the number of the fixing structure 130 is not limited.

The first fixing structure 131 may be disposed in a space in which the bottom cover 20 and the reflective plate 40 are spaced apart from each other. The second fixing structure 132 may be disposed in a spaced apart space between the bottom cover 20 and the reflective plate 40 . The first fixing structure 131 may be formed between the bottom cover 20 and the reflective plate 40 . The second fixing structure 132 may be formed between the bottom cover 20 and the reflective plate 40 .

In addition, the curvature of the reflecting plate 40 may be adjusted by adjusting the size, weight, or position of the first fixing structure 131 . The curvature of the reflector 40 may be changed by adjusting the size, weight, or position of the second fixing structure 132 .

As the curvature of the inclination portion 41 of the reflector 40 is changed by the first fixing structure 131 and the second fixing structure 132 , the light efficiency of the light source 10 may be improved. The light reflected by the first fixing structure 131 and the second fixing structure 132 may improve the image quality of the edge portion of the liquid crystal display.

5 is a perspective view of a reflective plate fixing structure according to a third embodiment of the present invention.

As shown in FIG. 5 , the fixing structure 230 according to the third embodiment includes a coating layer 35 . In addition, the coating layer 35 may be formed over the entire area of the fixing structure 230 . A coating layer 35 may be formed on the upper surface of the fixing structure 230 . In this case, the region where the coating layer 35 is formed is not limited. A light collecting pattern may be formed on an upper surface, a lower surface, or a side surface of the coating layer 35 .

Light efficiency reflected from the fixing structure 230 may be increased due to the coating layer 35 . Due to the coating layer 35, the light efficiency toward the liquid crystal panel 70 is increased, so that the reliability of the liquid crystal display device can be improved. Light efficiency may be improved by the light collection pattern of the coating layer 35 . Accordingly, the image quality of the edge portion of the liquid crystal display may be improved.

The coating layer 35 includes high reflectivity silver (Au), aluminum (Al), or the like. The coating layer 35 includes polycarbonate (PC), polyethylene terephthalate (PET), and polymethylmethacrylate (PMMA). At this time, the material of the coating layer 35 is not limited thereto.

6 is a perspective view of a reflective plate fixing structure according to a fourth embodiment of the present invention.

As shown, the reflecting plate fixing structure according to the fourth embodiment includes a support part 334 , a protrusion part 333 , and an adjustment part 330 .

The material of the reflecting plate fixing structure according to the fourth embodiment includes high reflectivity silver (Au), aluminum (Al), and the like. The coating layer 35 includes polycarbonate (PC), polyethylene terephthalate (PET), and polymethylmethacrylate (PMMA). At this time, the material of the reflecting plate fixing structure according to the fourth embodiment is not limited thereto.

The adjusting unit 330 may be disposed on the reflecting plate 40 . The adjusting unit 330 may be supported by the reflecting plate 40 . The adjusting unit 330 may be disposed on the inclined portion 42 of the reflecting plate 40 . The adjusting unit 31 may have a square plate shape. Alternatively, the control unit 31 may include those having a circular or triangular plate shape. The shape of the adjusting unit 31 is not limited thereto.

The adjusting unit 330 may include a first sub adjusting unit 332 and a second sub adjusting unit 331 . The first sub-adjusting unit 332 may adjust an angle with the reflector 40 . The second sub-adjusting unit 331 may adjust an angle with the reflector 40 . In this case, the movement of the angle adjustment of the first sub-adjusting unit 332 and the second sub-adjusting unit 331 is not limited to vertical, horizontal, and horizontal.

Due to the angle adjustment between the first sub-controlling unit 332 and the second sub-adjusting unit 331 and the reflecting plate 40 , it may be possible to adjust the curvature of the inclined surface of the reflecting plate 40 .

Light efficiency toward the liquid crystal panel 70 may be increased due to a change in the curvature of the inclined surface of the reflector 40 . The image quality of the edge portion of the liquid crystal display may be improved due to the change in the curvature of the inclined surface of the reflector 40 .

In addition, a light collecting pattern (not shown) may be formed on the fixing structure 330 . A light collecting pattern may be formed on an upper surface, a lower surface, or a side surface of the first sub-control unit 332 . A light collecting pattern may be formed on an upper surface, a lower surface, or a side surface of the second sub-control unit 331 .

The image quality of the edge portion of the liquid crystal display may be improved due to the condensing pattern.

In the above, the embodiment has been mainly described, but this is only an example and does not limit the present invention, and those of ordinary skill in the art to which the present invention pertains are not exemplified above in the range that does not depart from the essential characteristics of the present embodiment. It will be appreciated that various modifications and applications are possible. For example, each component specifically shown in the embodiment can be implemented by modification. And differences related to such modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

10: a plurality of light sources 20: bottom cover 30: fixed structure
40: reflector 50: top cover 60: optical sheet 70: liquid crystal module

Claims (18)

bottom cover;
a reflector comprising a flat portion disposed in a central region of the bottom cover and an inclined portion disposed at an edge of the flat portion;
at least one light source disposed on the reflector; and
It is disposed on one side of the inclined portion and includes a fixing structure for fixing the reflector and the bottom cover,
The fixed structure is
a control unit disposed on the reflector;
a protrusion connected to the adjusting unit and penetrating the reflecting plate; and
It is connected to the protrusion and includes a support disposed on the bottom cover,
The control unit includes first and second sub control units, wherein at least one of the first and second sub control units is capable of angle control. delete The method of claim 1,
The fixing structure is a backlight unit including at least one of acryl, polycarbonate (PC), and polymethylmethacrylate (PMMA). The method of claim 1,
The control unit is a backlight unit including a coating layer. The method of claim 1,
The fixing structure includes a first fixing structure and a second fixing structure,
The inclined portion of the reflector includes a first area and a second area,
A backlight unit in which the first fixing structure is disposed in the first area and the second fixing structure is disposed in the second area. delete The method of claim 1,
A backlight unit in which the inclined portion is a curved surface. The method of claim 1,
The control unit is a backlight unit including a condensing pattern. bottom cover;
a reflector comprising a flat portion disposed in a central region of the bottom cover and an inclined portion disposed at an edge of the flat portion;
at least one light source disposed on the reflector;
at least one or more optical sheets disposed on the reflector;
a liquid crystal panel disposed on the optical sheet; and
It is disposed on one side of the inclined portion and includes a fixing structure for fixing the reflector and the bottom cover,
The fixed structure is
a control unit disposed on the reflector;
a protrusion connected to the adjusting unit and penetrating the reflecting plate; and
It is connected to the protrusion and includes a support disposed on the bottom cover,
The control unit may include first and second sub control units, wherein at least one of the first and second sub control units is capable of adjusting an angle. delete delete 10. The method of claim 9,
A liquid crystal display device in which the inclined portion is a curved surface. 10. The method of claim 9,
The fixing structure includes a first fixing structure and a second fixing structure,
The inclined portion of the reflector includes a first area and a second area,
The liquid crystal display device, wherein the first fixing structure is disposed in the first area, and the second fixing structure is disposed in the second area. 10. The method of claim 9,
The fixed structure is a liquid crystal display including a coating layer. 15. The method of claim 14,
A liquid crystal display including a light collecting pattern on the coating layer. 15. The method of claim 14
The coating layer is
A liquid crystal display comprising at least one of silver (Au), aluminum (Al), polycarbonate (PC), polyethylene terephthalate (PET), and polymethylmethacrylate (PMMA). delete 16. The method of claim 15,
The light collecting pattern includes any one of a triangular prism pattern, a hemispherical pattern, and a double layer pattern.

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