Liquid crystal display device

Abstract

A liquid crystal display device includes: a bottom cover including a first cover portion in a first direction and a second cover portion in a second direction; a backlight unit located above the bottom cover and including a light source, a diffuser plate, and an optical sheet; a support body maintaining a distance between the light source and the diffuser plate and including a first support portion and a second support portion; and a liquid crystal panel located above the backlight unit and the support body, wherein the support body and the bottom cover are coupled to each other by a plurality of screws, and wherein the first cover portion includes a plurality of protrusions that protrude outward from an outer surface of the second cover portion and respectively correspond to the plurality of screws.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Korean Patent Application No. 10-2021-0189358, filed on December 28, 2021, which is hereby incorporated by reference in its entirety. Technical Field

[0003] The present disclosure relates to a display device, and more particularly, to a liquid crystal display device with a narrow bezel. Background Art

[0004] With the development of the information society, demand for display devices that display images in various forms has increased, and flat panel display devices (FPDs) such as liquid crystal display devices (LCDs) and organic light emitting diode display devices (OLEDs) have been developed and applied to various fields.

[0005] Among flat panel display devices, liquid crystal display devices are widely used due to their advantages such as small size, light weight, thin thickness, and low driving power.

[0006] Liquid crystal display devices utilize the optical and dielectric anisotropy of liquid crystals and include two substrates, a liquid crystal layer between the two substrates, and pixel electrodes and common electrodes for driving the liquid crystal molecules in the liquid crystal layer. Liquid crystal display devices control the alignment of liquid crystal molecules by applying voltages to the pixel and common electrodes, generating an electric field and displaying images through corresponding changes in light transmittance. Liquid crystal display devices are widely used in portable devices such as mobile phones and multimedia devices, monitors for laptops and computers, and large televisions.

[0007] In liquid crystal display devices, the area other than the display area that displays images constitutes the bezel of a product using the liquid crystal display device. Recently, in display devices of the same size, by minimizing the width of the bezel and maximizing the display area, borderless products with a clean appearance have been researched and developed, in which mechanical components such as various housings or covers are not displayed.

[0008] For this reason, a structure has been proposed in which an adhesive member is used between components of a liquid crystal display device and the adhesive member fixes the components with a strong adhesive force.

[0009] However, when adhesion failure occurs or the components need to be repaired, it is difficult to separate the components due to the strong adhesive force of the adhesive member. Therefore, in the process of separating the components, the liquid crystal panel or optical sheet of the backlight unit is damaged, making it difficult to repair and reassemble. Summary of the Invention

[0010] Accordingly, the present disclosure is directed to providing a liquid crystal display device that substantially obviates one or more problems due to the above limitations and disadvantages, and provides a liquid crystal display device with a minimized bezel.

[0011] More particularly, the present disclosure provides a liquid crystal display device having a minimized bezel.

[0012] The present disclosure also provides a liquid crystal display device that is easy to repair and reassemble.

[0013] Additional features and aspects will be set forth in the following description and, in part, will become apparent from the description or may be learned by practicing the disclosure provided herein. Other features and aspects of the inventive concept may be realized and obtained through the structures specifically pointed out in the written description and claims and the accompanying drawings.

[0014] To achieve these and other aspects of the present disclosure, as embodied and generally described herein, a liquid crystal display device includes: a bottom cover including a first cover portion in a first direction and a second cover portion in a second direction; a backlight unit located above the bottom cover and including a light source, a diffuser plate, and an optical sheet; a support body maintaining a distance between the light source and the diffuser plate and including a first support portion and a second support portion; and a liquid crystal panel located above the backlight unit and the support body, wherein the support body and the bottom cover are coupled to each other by a plurality of screws, and wherein the first cover portion includes a plurality of protrusions that protrude outward from an outer surface of the second cover portion and respectively correspond to the plurality of screws.

[0015] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the inventive concepts as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this application. The drawings illustrate embodiments of the present disclosure and together with the description serve to explain various principles of the present disclosure.

[0017] In the attached figure:

[0018] Figure 1 is a schematic cross-sectional view of a liquid crystal display device according to an embodiment of the present disclosure;

[0019] Figure 2 is a schematic cross-sectional view of another portion of the liquid crystal display device according to an embodiment of the present disclosure;

[0020] Figure 3 is a top perspective view of a liquid crystal display device according to an embodiment of the present disclosure;

[0021] Figure 4is a bottom perspective view of a liquid crystal display device according to an embodiment of the present disclosure;

[0022] Figure 5 is a top perspective view schematically showing a structure between a bottom cover and a support body of a liquid crystal display device according to an embodiment of the present disclosure;

[0023] Figure 6 is a bottom perspective view schematically showing a structure between a bottom cover and a support body of a liquid crystal display device according to an embodiment of the present disclosure;

[0024] Figure 7 is a top view schematically showing a combined structure of a bottom cover and a supporting body of a liquid crystal display device according to an embodiment of the present disclosure;

[0025] Figure 8 yes Figure 7 An enlarged top view of area A1;

[0026] Figure 9 yes Figure 7 An enlarged exploded perspective view of area A1;

[0027] Figure 10 is an enlarged top view of the bottom cover of an embodiment of the present disclosure;

[0028] Figure 11 is an enlarged top view of a support body according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] Reference will now be made in detail to various aspects of the present disclosure, exemplary embodiments of which are illustrated in the accompanying drawings.

[0030] Figure 1 and Figure 2 is a schematic cross-sectional view of a liquid crystal display device according to an embodiment of the present disclosure, Figure 3 is a top perspective view of a liquid crystal display device according to an embodiment of the present disclosure, Figure 4 : is a bottom perspective view of a liquid crystal display device according to an embodiment of the present disclosure. Figure 1 、 Figure 3 and Figure 4 showing a portion having a threaded engagement structure, Figure 2 The portion without the threaded engagement is shown.

[0031] also, Figure 5 and Figure 6 1 and 2 are top and bottom perspective views respectively schematically showing a structure between a bottom cover and a support body of a liquid crystal display device according to an embodiment of the present disclosure, and illustrate a portion having a screw-engaging structure.

[0032] like Figures 1 to 6As shown, the liquid crystal display device of the embodiment of the present disclosure includes a liquid crystal panel 100, a backlight unit 200, an adhesive member 300, a guide plate 400, a support body 500 and a bottom cover 600. The support body 500 and the bottom cover 600 are combined with each other by screws 800.

[0033] The liquid crystal panel 100 includes a first substrate 110 located at a lower position and a second substrate 120 located at an upper position, with a liquid crystal layer (not shown) interposed between the first substrate 110 and the second substrate 120 .

[0034] Although not shown in the figure, the first substrate 110 includes a plurality of gate lines and a plurality of data lines on its inner surface, and the gate lines and data lines intersect with each other to define a plurality of pixel areas. In each pixel area, a thin film transistor, a pixel electrode, and a common electrode are provided. The thin film transistor is connected to the corresponding gate line and the corresponding data line, and the pixel electrode is connected to the thin film transistor. The pixel electrode and the common electrode generate an electric field to drive the liquid crystal molecules of the liquid crystal layer. The first substrate 110 can be referred to as an array substrate.

[0035] In addition, although not shown in the figure, the second substrate 120 includes a black matrix, a color filter layer, and an outer coating on its inner surface. The color filter layer includes red, green, and blue color filters, and the black matrix has openings corresponding to the respective pixel areas. The red, green, and blue color filters of the color filter layer are respectively arranged corresponding to the openings. The second substrate 120 can be referred to as a color filter substrate.

[0036] The side sealing member 150 is disposed at sides of the first and second substrates 110 and 120. The side sealing member 150 may be formed of a material that absorbs light.

[0037] The side sealing member 150 can prevent light leakage from occurring at the side of the liquid crystal panel 100. More specifically, a portion of light output from the liquid crystal panel 100 propagates toward the side of the liquid crystal panel 100, and the side sealing member 150 is provided at the side of the liquid crystal panel 100, thereby blocking light leakage caused by the light propagating toward the side of the liquid crystal panel 100.

[0038] In addition, the side sealing member 150 protects the side surfaces of the liquid crystal panel 100 from external impacts.

[0039] The liquid crystal panel 100 also includes a first polarizer 130 and a second polarizer 140. The first polarizer 130 is attached to the outer surface of the first substrate 110, that is, the lower surface of the first substrate 110 in the context of the drawings, and the second polarizer 140 is attached to the outer surface of the second substrate 120, that is, the upper surface of the second substrate 120 in the context of the drawings. In the drawings, the first polarizer 130 is disposed below the first substrate 110, and the second polarizer 140 is disposed above the second substrate 120. The first polarizer 130 and the second polarizer 140 transmit only linearly polarized light parallel to their respective transmission axes. The transmission axis of the first polarizer 130 is perpendicular to the transmission axis of the second polarizer 140.

[0040] Here, the size of the second polarizer 140 is greater than that of the first polarizer 130. Therefore, the first polarizer 130 may be spaced apart from the side sealing member 150, and the second polarizer 140 may be in contact with the side sealing member 150.

[0041] Furthermore, the first polarizer 130 is smaller than the first substrate 110 and the outer surface of the first substrate 110 is partially exposed. More specifically, the outer surface of the first substrate 110 is exposed between the edges of the first polarizer 130 and the first substrate 110.

[0042] The backlight unit 200 is disposed under the liquid crystal panel 100 to provide light to the liquid crystal panel 100. The backlight unit 200 includes a light emitting diode (LED) array 210, a reflective plate 220, a diffusion plate 230, and optical sheets 240.

[0043] The backlight unit 200 is a direct-lit type in which an LED array 210 serving as a light source is disposed directly below the liquid crystal panel 100 .

[0044] The LED array 210 may include a plurality of LEDs 212 disposed on a printed circuit board (PCB). Each LED 212 may be a Mini LED having a size of 100 to 200 μm. Thus, by implementing local dimming that selectively provides light to the liquid crystal panel 100 by region, black brightness is improved, thereby improving contrast and reducing power consumption. However, the present disclosure is not limited thereto, and LEDs of various sizes and types may be applied.

[0045] The reflective plate 220 is provided on the LED array 210. The reflective plate 220 has openings corresponding to the LEDs 212, and the LEDs 212 are arranged in the respective openings. Therefore, light from the LEDs 212 travels toward the liquid crystal panel 100, and light reflected by the liquid crystal panel 100 or other components above the LEDs 212 and traveling toward the reflective plate 220 is reflected again by the reflective plate 220 and then sent back to the liquid crystal panel 100, thereby improving light efficiency.

[0046] The diffusion plate 230 is disposed above the reflection plate 220. The diffusion plate 230 is spaced apart from the LED array 210 and the reflection plate 220 by a predetermined distance and uniformly diffuses light from the LEDs 212.

[0047] The optical sheet 240 is disposed above the diffusion plate 230. The optical sheet 240 may include at least one diffusion sheet and at least one light-collecting sheet so that a more uniform surface light source can be incident on the liquid crystal panel 100 by diffusing or converging light passing through the diffusion plate 230.

[0048] For example, the optical sheet 240 may include two condensing sheets and a diffusion sheet sequentially disposed above the diffusion plate 230. The condensing sheets may include a prism pattern or a lens pattern. In this case, one of the condensing sheets may include a lens pattern, and the other may include a prism pattern.

[0049] On the other hand, the optical sheet 240 may also include a brightness enhancement film in which layers having different refractive indices are alternately stacked, or the diffusion sheet may be replaced with a brightness enhancement film.

[0050] The liquid crystal panel 100 and the backlight unit 200 are fastened and supported by the guide plate 400 , the support main 500 and the bottom cover 600 .

[0051] First, the liquid crystal panel 100 is fastened to the guide plate 400. The guide plate 400 may be formed along the edge of the liquid crystal panel 100 to have a planar structure in a substantially square frame shape.

[0052] The guide plate 400 includes a first guide portion 410 and a second guide portion 420. The first guide portion 410 may be a horizontal portion extending in the X-direction, and the second guide portion 420 may be a vertical portion extending in the Z-direction. One side end of the first guide portion 410 may be connected to the upper end of the second guide portion 420, and the guide plate 400 may have a generally L-shaped cross-section. On the other hand, the other side end of the first guide portion 410 may protrude in the Z-direction. In other words, the first guide portion 410 may have a protrusion on the other side end.

[0053] The adhesive member 300 is disposed between the first guide portion 410 of the guide plate 400 and the liquid crystal panel 100 , so that the liquid crystal panel 100 may be fixed to the first guide portion 410 by the adhesive member 300 .

[0054] In this case, the adhesive member 300 overlaps and contacts the exposed lower surface of the first substrate 110, and also overlaps and contacts the first polarizer 130. The adhesive member 300 can be a foam pad with cushioning properties, and thus, the adhesive member 300 can serve as a buffer to absorb external impact. The adhesive member 300 can be formed of an elastic material and, for example, polyethylene, polyacrylic acid (polyacryl) or polyurethane. However, the present disclosure is not limited thereto.

[0055] The support body 500 is disposed below the guide plate 400. The support body 500 may be formed along the edge of the liquid crystal panel 100 to have a substantially square frame-shaped planar structure. The support body 500 includes a first support portion 510 and a second support portion 520.

[0056] The first supporting portion 510 is disposed between the reflective plate 220 and the diffuser plate 230. The second supporting portion 520 extends from the upper surface of the edge of the first supporting portion 510 toward the Z direction and surrounds the side surfaces of the diffuser plate 230 and the optical sheet 240. The second supporting portion 520 is disposed between the side surfaces of the diffuser plate 230 and the optical sheet 240 and the second guide portion 420 of the guide plate 400.

[0057] The first support portion 510 maintains a certain distance between the LED array 210 and the diffusion plate 230 so that light from the LEDs 212 can be mixed to achieve a uniform surface light source.

[0058] The diffuser plate 230 is disposed on the first support portion 510. Therefore, the diffuser plate 230 and the optical sheet 240 are disposed between the first support portion 510 and the first guide portion 410, and the upper surface of the first support portion 510 contacts the lower surface of the diffuser plate 230, thereby supporting the diffuser plate 230 and the optical sheet 240.

[0059] The outer surface of the first support portion 510 is adjacent to the second guide portion 420 of the guide plate 400 and is surrounded by the second guide portion 420. The inner surface of the first support portion 510 has an inclination. That is, the first support portion 510 has an inclined surface 510a on the inner side. The inclined surface 510a reflects light from the LED 212 and transmits the reflected light to the diffuser plate 230.

[0060] In addition, the first support portion 510 has a support hole 512 , a first support groove 514 , and a second support groove 516 .

[0061] The support hole 512 is provided to correspond to the screw 800. The support hole 512 includes a first hole portion 512a, in which the screw head 810 is provided, and a second hole portion 512b, in which the screw body 820 is provided. When viewed from above, the area of ​​the first hole portion 512a is larger than that of the second hole portion 512b. The first hole portion 512a extends into the inclined surface 510a and is open on its inner side. The support hole 512 is generally provided in the inner surface and the upper surface of the first support portion 510.

[0062] The first support groove 514 is provided in the outer surface of the first support portion 510 and is provided below the second support portion 520. The first support groove 514 is provided in a portion where the screw 800 is not provided. In other words, the first support groove 514 is spaced apart from the support hole 512 and is provided in the first support portion 510. The second cover portion 620 of the bottom cover 600 is provided in the first support groove 514.

[0063] The second support groove 516 is provided on the lower side of the inclined surface 510a of the first support portion 510. The edges of the LED array 210 and the reflective plate 220 are disposed in the second support groove 516, and the first support portion 510 presses and secures the edges of the LED array 210 and the reflective plate 220, thereby preventing them from separating. Therefore, there is no need to provide an additional structure for preventing the reflective plate 220 from separating.

[0064] The support body 500 may be formed of plastic and may be molded. For example, the support body 500 may be formed of white polycarbonate (PC), but is not limited thereto.

[0065] The bottom cover 600 is disposed below the support body 500. The bottom cover 600 includes a first cover portion 610 and a second cover portion 620. The first cover portion 610 is a horizontal surface and extends substantially in the X direction. The first cover portion 610 may have at least one curved portion to accommodate various components required to drive the liquid crystal panel 100.

[0066] The second cover portion 620 is a vertical surface extending in the Z direction. The second cover portion 620 is bent from the first cover portion 610. The second cover portion 620 is disposed in the first support groove 514 of the support body 500. Therefore, the second cover portion 620 is disposed between the second guide portion 420 of the guide plate 400 and the first support portion 510 of the support body 500, thereby preventing the support body 500 from being pushed outward. As described above, the bottom cover 600 is coupled to the support body 500 by screws 800. To this end, the first cover portion 610 of the bottom cover 600 has a cover hole 612. The cover hole 612 is disposed below the support hole 512.

[0067] On the other hand, the bottom cover 600 has a protrusion 614 corresponding to the cover hole 612, and a cover groove 616 is formed between the protrusion 614 and the second cover portion 620. This will be described in detail later.

[0068] A press-fit nut 700, commonly referred to as a PEM nut, is disposed in the cover hole 612. The press-fit nut 700 is also disposed in the second hole portion 512b of the support hole 512. However, the present disclosure is not limited thereto. Alternatively, instead of the press-fit nut 700, threads may be formed in the cover hole 612 by tapping.

[0069] The press-fit nut 700 is engaged with the screw 800 so that the bottom cover 600 is combined with the support body 500. In this case, the screw body 820 is provided inside the press-fit nut 700.

[0070] On the other hand, the adhesive tape 900 is attached to the outer surface of the second guide portion 420 of the guide panel 400 and the lower surface of the first cover portion 610 of the bottom cover 600 to fix the guide panel 400 and the bottom cover 600 .

[0071] In the liquid crystal display device of the embodiment of the present disclosure, the width of the frame can be reduced. Figure 1 Describe this.

[0072] exist Figure 1 When embedded screws are used, the first distance d1 corresponding to the frame width is determined by the second distance d2 from the outer surface of the guide plate 400 to the bottom end of the inclined surface 510a of the support body 500. In this case, the second distance d2 is determined by the type of screw 800 and the position of the corresponding cover hole 612. Furthermore, to prevent separation of the reflective plate 220, a certain distance must be maintained between the reflective plate 220 and the support body 500. Therefore, when embedded screws are used, the second distance d2 increases.

[0073] On the other hand, when an open-type screw is applied, the second distance d2 can be reduced compared to an embedded screw because a wall surrounding the screw is not required.

[0074] Meanwhile, the second distance d2 may decrease as the position of the cover hole 612 corresponding to the screw 800 is closer to the outer surface of the guide plate 400. In this case, in order to apply the press-fit nut 700 or form a thread by tapping, a third distance d3 is required, which is the minimum distance from the edge of the first cover portion 610. For example, the third distance d3 may be 1.5 mm, but is not limited thereto.

[0075] Therefore, in the liquid crystal display device of the embodiment of the present disclosure, the protrusion 614 is provided in the first cover portion 610 to correspond to the cover hole 612 , so that the cover hole 612 is located close to the outer surface of the guide plate 400 .

[0076] The edge of the protrusion 614 is located outside the outer surfaces of the second cover portion 620 and the support body 500, and the protrusion 614 overlaps with the second guide portion 420 of the guide plate 400 in the Z direction. At this time, the edge of the protrusion 614 is located inside the outer surface of the second guide portion 420.

[0077] As described above, in the liquid crystal display device of the embodiment of the present disclosure, the support body 500 and the bottom cover 600 are coupled by the screws 800 , thereby facilitating repair and rework when a defect or problem occurs.

[0078] In addition, since an open screw is used and the protrusion 614 is provided in the second cover portion 620 of the bottom cover 600, the tightening position of the screw 800 can be moved as close to the guide plate 400 as possible, so that the second distance d2 can be reduced and the width d1 of the frame can be minimized. For example, the width d1 of the frame can be 4 mm or less, preferably 3 mm or less.

[0079] In this case, a white screw may be used or white paint may be applied to the screw head 810 so that the open screw 800 is not visually recognized from the outside.

[0080] Will refer to Figures 7 to 11 The detailed structures of the bottom cover and the supporting body of the liquid crystal display device according to the embodiment of the present disclosure are described in detail.

[0081] Figure 7 is a top view schematically showing a combined structure of a bottom cover and a supporting body of a liquid crystal display device according to an embodiment of the present disclosure, Figure 8 yes Figure 7 An enlarged top view of area A1, Figure 9 yes Figure 7 An enlarged exploded perspective view of area A1, Figure 10 is an enlarged top view of the bottom cover of an embodiment of the present disclosure, Figure 11 FIG is an enlarged top view of the supporting body of an embodiment of the present disclosure. Figure 7 , the region including the region A1 indicated by the dotted line represents a screw tightening portion.

[0082] exist Figures 7 to 11 In the embodiment, the support body 500 is disposed above the bottom cover 600. At this time, the support body 500 is disposed along the edge of the bottom cover 600.

[0083] The support body 500 and the bottom cover 600 are coupled to each other by a plurality of screws 800. The number and positions of the plurality of screws 800 are not limited to the illustration and may be changed.

[0084] The bottom cover 600 includes a first cover portion 610 and a second cover portion 620 . The first cover portion 610 has a cover hole 612 and a protrusion 614 corresponding to the cover hole 612 . The cover hole 612 has a press-fit nut 700 for tightening the screw 800 .

[0085] Here, the cover hole 612 may not be pre-set and may be formed during the process of applying the press-fit nut 700 .

[0086] The protrusion 614 protrudes outward from the outer surface of the second cover portion 620. In addition, the protrusion 614 also protrudes outward from the outer surface of the support body 500. In this case, the distance d3 from the cover hole 612 to the edge of the protrusion 614 in the X direction is greater than the X-direction length d4 of the second cover portion 620.

[0087] The protrusions 614 are disposed between the second cover portions 620 adjacent to each other in the Y direction. Accordingly, each second cover portion 620 is disposed between the protrusions 614 adjacent to each other in the Y direction.

[0088] The protrusion 614 and the second cover portion 620 are spaced apart from each other, and a cover groove 616 is provided between the protrusion 614 and the second cover portion 620. The cover groove 616 may facilitate bending of the second cover portion 620.

[0089] On the other hand, the support body 500 includes a first support portion 510 and a second support portion 520 . The first support portion 510 has a support hole 512 for tightening the screw 800 . The support hole 512 has a first hole portion 512 a and a second hole portion 512 b .

[0090] The screw head 810 is disposed in the first hole portion 512 a , and the screw body 820 is disposed in the second hole portion 512 b . The screw body 820 is also disposed in the cover hole 612 .

[0091] Furthermore, the first support portion 510 has a first support groove 514 on its outer surface below the second support portion 520, and the second cover portion 620 is disposed in the first support groove 514. The X-direction length d5 ​​of the first support groove 514 may be equal to or greater than the X-direction length d4 of the second cover portion 620.

[0092] As described above, since the second cover portion 620 is disposed in the first support groove 514 , the protrusion 614 is disposed between adjacent first support grooves 514 in the Y direction. Accordingly, the first support groove 514 is disposed between adjacent protrusions 614 in the Y direction.

[0093] In the present disclosure, since the support body and the bottom cover are coupled to each other by screws, repair and reassembly may be facilitated when a defect or problem occurs.

[0094] In addition, in the present disclosure, by providing the protrusion, the screw tightening position is moved outward as much as possible, thereby minimizing the width of the frame.

[0095] Furthermore, since there is no need to provide an additional structure for preventing the reflection plate from being separated, the cost can be reduced.

[0096] It is obvious to those skilled in the art that various modifications and variations can be made to the display device of the present disclosure without departing from the technical concept or scope of the present disclosure. Therefore, the present disclosure is intended to cover modifications and variations of the present disclosure as long as they fall within the scope of the appended claims and their equivalents.

Claims

1. A liquid crystal display device, comprising: a bottom cover comprising a first cover portion extending along a first direction and a second cover portion extending along a second direction perpendicular to the first direction; a backlight unit, located above the bottom cover and comprising a light source, a diffusion plate, and an optical sheet; a supporting body comprising a first supporting portion for maintaining a distance between the light source and the diffusion plate and a second supporting portion extending from an upper surface of an edge of the first supporting portion in the second direction; as well as a liquid crystal panel, located above the backlight unit and the supporting body, wherein the support body and the bottom cover are combined with each other by a plurality of screws, and The first cover portion includes a plurality of protrusions that protrude outward from the outer surface of the second cover portion and correspond to the plurality of screws respectively. Wherein, the second cover portion is arranged between adjacent protrusions.

2. The liquid crystal display device according to claim 1, wherein The first cover portion has a cover groove located between the second cover portion and one of the plurality of protrusions.

3. The liquid crystal display device according to claim 1, wherein The first supporting portion has a first supporting groove corresponding to the second covering portion.

4. The liquid crystal display device according to claim 3, wherein Each protrusion is disposed between adjacent first supporting grooves.

5. The liquid crystal display device according to claim 3, wherein The first supporting portion further has a second supporting groove corresponding to an edge of the light source.

6. The liquid crystal display device according to claim 1, wherein The plurality of protrusions protrude outward from an outer surface of the second support portion.

7. The liquid crystal display device according to claim 1 , further comprising a guide plate located between the backlight unit and the liquid crystal panel. in, The guide plate includes a first guide portion in a first direction and a second guide portion in a second direction, and The plurality of protrusions partially overlap with the second guide portion.

8. The liquid crystal display device according to claim 1, wherein The first cover portion has cover holes corresponding to the screws, and the first support portion has support holes corresponding to the cover holes, and Wherein, press-fit nuts are provided in the cover hole and the support hole.

9. The liquid crystal display device according to claim 8, wherein The supporting hole has a first hole portion and a second hole portion, and The area of ​​the first hole portion is larger than that of the second hole portion, and the inner side of the first hole portion is open.

10. The liquid crystal display device according to claim 1, wherein An outer surface of the support body is disposed on the plurality of protrusions.

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