Patent Description:
The present disclosure relates to a display device, and more particularly, to a liquid crystal display device having a narrow bezel.

As the information society is in progress, a demand for display devices of displaying images increases in various forms, and flat panel display devices (FPD) such as liquid crystal display devices (LCD) and organic light emitting diode display devices (OLED) have been developed and applied to various fields.

Among the flat panel display devices, liquid crystal display devices have been widely used because of their compact size, light weight, thin thickness, low power driving, and the like.

The liquid crystal display devices use optical anisotropy and dielectric anisotropy of liquid crystal and include two substrates, a liquid crystal layer between the two substrates, and a pixel electrode and a common electrode for driving liquid crystal molecules of the liquid crystal layer. The liquid crystal display devices control the arrangement of the liquid crystal molecules by an electric field generated by applying a voltage to the pixel electrode and the common electrode and display images by the light transmittance changed accordingly. The liquid crystal display devices have been widely applied to portable devices such as cellphones or multimedia devices, monitors for notebooks or computers, and large televisions.

In the liquid crystal display devices, an area except for a display area where an image is displayed becomes a bezel of products using the liquid crystal display devices. Recently, by minimizing a width of the bezel such that the display area is maximized in the display device having the same size, borderless products have been researched and developed with a neat appearance in which mechanical parts such as various cases or covers are not shown.

To do this, structures have been suggested in which an adhesive member is used between components of the liquid crystal display device, and the adhesive member fixes the components by a strong adhesive force.

However, when adhesion failure occurs or the components need to be repaired, it is difficult to separate the components because of the strong adhesive force of the adhesive member. Accordingly, in the process of separating the components, damages are applied to a liquid crystal panel or optical sheets of a backlight unit, so that repair and reassembly are difficult. Liquid crystal display devices making use of mechanical connection means to connect components have been described by the patent application documents <CIT>, <CIT> and <CIT>.

Accordingly, the present disclosure is directed to a liquid crystal display device that substantially obviates one or more of the problems due to limitations and disadvantages described above.

More specifically, it is an object to provide a liquid crystal display device with a minimized bezel.

It is also an object to provide a liquid crystal display device that can be easily repaired and reassembled.

Additional features and aspects will be set forth in the description that follows, and in part will be apparent from the description, or may be learned by practice of the present disclosure provided herein.

The object is solved by the features of independent claim <NUM>.

To achieve these and other aspects of the present disclosure, as embodied and broadly described herein, a liquid crystal display device includes inter alia a cover bottom including a first cover portion of a first direction and a second cover portion of a second direction; a backlight unit over the cover bottom and including a light source, a diffusion plate, and an optical sheet; a support main maintaining a distance between the light source and the diffusion plate and including a first support portion and a second support portion; and a liquid crystal panel over the backlight unit and the support main, wherein the support main and the cover bottom are combined with each other by a plurality of screws, and wherein the first cover portion includes a plurality of protrusions protruding outward from an outer surface of the second cover portion and corresponding to the plurality of screws, respectively.

In one more embodiments, the support main may be also called support main structure.

According to the claimed invention, the second cover portion may disposed between adjacent protrusions.

In one more embodiments, the first cover portion may have a cover groove between the second cover portion and one of the plurality of protrusions.

In one more embodiments, the first support portion may have a first support groove corresponding to the second cover portion.

In one more embodiments, each protrusion may be disposed between adjacent first support grooves.

In one more embodiments the first support portion may further have a second support groove corresponding to an edge of the light source.

In one more embodiments the plurality of protrusions may protrude outward from an outer surface of the second support portion.

In one more embodiments, the liquid crystal display device may further comprise a guide panel between the backlight unit and the liquid crystal panel.

In one more embodiments, the guide panel may include a first guide portion extending in the first direction and a second guide portion extending in the second direction.

In one more embodiments the plurality of protrusions may partially overlap the second guide portion.

In one more embodiments, the first cover portion may have a cover hole corresponding to each screw.

In one more embodiments, the first support portion may have a support hole corresponding to the cover hole.

In one more embodiments, a press-fit nut may be is provided in the cover hole and the support hole.

In one more embodiments the support hole may have a first hole part and a second hole part.

In one more embodiments an area of the first hole part may be larger than an area of the second hole part.

In one more embodiments, an inner side of the first hole part may be is opened.

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.

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

Reference will now be made in detail to aspects of the disclosure, an exemplary embodiment of which is illustrated in the accompanying drawings.

<FIG> are schematic cross-sectional views of a LCD device of an embodiment of the present disclosure, <FIG> is a top perspective view of the LCD device of the embodiment of the present disclosure, and <FIG> is a bottom perspective view of the liquid crystal display device of the embodiment of the present disclosure. Here, <FIG>, <FIG> show a part with a screw joint structure, and <FIG> shows a part without a screw joint structure.

Further, <FIG> are a top perspective view and a bottom perspective view schematically showing a configuration between a cover bottom and a support main of the liquid crystal display device of the embodiment of the present disclosure, respectively, and show the part with the screw joint structure.

As shown in <FIG>, the liquid crystal display device of the embodiment of the present disclosure includes a liquid crystal panel <NUM>, a backlight unit <NUM>, an adhesive member <NUM>, a guide panel <NUM>, a support main <NUM>, and a cover bottom <NUM>. The support main <NUM> and the cover bottom <NUM> are combined with each other by a screw <NUM>. The support main <NUM> may be also called support main structure <NUM>.

The liquid crystal panel <NUM> includes a first substrate <NUM> in a lower position and a second substrate <NUM> in an upper position, and a liquid crystal layer (not shown) is interposed between the first and second substrates <NUM> and <NUM>.

Although not shown in the figures, the first substrate <NUM> includes a plurality of gate lines and a plurality of data lines on an inner surface thereof. The gate lines and the data lines cross each other to define a plurality of pixel regions. In each pixel region, 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 liquid crystal molecules of the liquid crystal layer. This first substrate <NUM> may be referred to as an array substrate.

In addition, although not shown in the figures, the second substrate <NUM> includes a black matrix, a color filter layer, and an overcoat layer on an inner surface thereof. The color filter layer includes red, green, and blue color filters, and the black matrix has openings corresponding to respective pixel regions. The red, green, and blue color filters of the color filter layer are disposed to correspond to the opening, respectively. This second substrate <NUM> may be referred to as a color filter substrate.

A side sealing member <NUM> is provided at side or lateral surfaces of the first and second substrates <NUM> and <NUM>. The side sealing member <NUM> may be formed of a material absorbing light.

The side sealing member <NUM> can prevent light leakage occurring at side surfaces of the liquid crystal panel <NUM>. More specifically, some of light outputted from the liquid crystal panel <NUM> travel toward the side surfaces of the liquid crystal panel <NUM>. The side sealing member <NUM> is provided at the side surfaces of the liquid crystal panel <NUM>, thereby blocking the light leakage due to the light traveling toward the side surfaces of the liquid crystal panel <NUM>.

In addition, the side sealing member <NUM> protects the side surfaces of the liquid crystal panel <NUM> from external impacts.

The liquid crystal panel <NUM> further includes a first polarizer <NUM> and a second polarizer <NUM>. The first polarizer <NUM> is attached to an outer surface of the first substrate <NUM>, that is, a lower surface of the first substrate <NUM>, and the second polarizer <NUM> is attached to an outer surface of the second substrate <NUM>, that is, an upper surface of the second substrate <NUM> in the context of the figures.

In the figures, the first polarizer <NUM> is disposed under the first substrate <NUM>, and the second polarizer <NUM> is disposed over the second substrate <NUM>. The first polarizer <NUM> and the second polarizer <NUM> transmit linearly-polarized light only parallel to respective transmission axes. The transmission axis of the first polarizer <NUM> is perpendicular to the transmission axis of the second polarizer <NUM>.

One of the first and second polarizer <NUM>, <NUM> might be omitted.

Here, a size of the second polarizer <NUM> is larger than a size of the first polarizer <NUM>. Accordingly, the first polarizer <NUM> may be spaced apart from the side sealing member <NUM>, and the second polarizer <NUM> may be in contact with the side sealing member <NUM>.

Further, the size of the first polarizer <NUM> is smaller than a size of the first substrate <NUM>, and the outer surface of the first substrate <NUM> is partially exposed. More specifically, the outer surface of the first substrate <NUM> is exposed between an edge of the first polarizer <NUM> and an edge of the first substrate <NUM>.

The backlight unit <NUM> is disposed under the liquid crystal panel <NUM> to provide light to the liquid crystal panel <NUM>. The backlight unit <NUM> includes a light emitting diode (LED) array <NUM>, a reflection plate <NUM>, a diffusion plate <NUM>, and an optical sheet <NUM>.

The backlight unit <NUM> is a direct type in which the LED array <NUM> of a light source is disposed right under the liquid crystal panel <NUM>.

The LED array <NUM> may include a plurality of LEDs <NUM>. The LEDs might be provided on a printed circuit board (PCB). Here, each LED <NUM> may be a mini LED having a size of <NUM> to <NUM>. Accordingly, by implementing the local dimming in which light is selectively provided to the liquid crystal panel <NUM> by zones, the black luminance is improved, so that the contrast ratio can be increased and the power consumption can be decreased. However, the present disclosure is not limited thereto, and various sizes and types of LEDs can be applied.

The reflection plate <NUM> is provided on the LED array <NUM>. The reflection plate <NUM> has openings corresponding to the LEDs <NUM>, and the LEDs <NUM> are arranged in the respective openings. Accordingly, light from the LEDs <NUM> travels toward the liquid crystal panel <NUM>, and light reflected by the liquid crystal panel <NUM> or other components over the LEDs <NUM> and traveling toward the reflection plate <NUM> is reflected by the reflection plate <NUM> again and then is sent back to the liquid crystal panel <NUM>, thereby increasing the light efficiency.

The diffusion plate <NUM> is disposed over the reflection plate <NUM>. The diffusion plate <NUM> is spaced apart from the LED array <NUM> and the reflection plate <NUM> with a predetermined distance and uniformly diffuses light from the LEDs <NUM>. The distance between the reflection plate <NUM> and the diffusion plate <NUM> is larger than the distance between optical sheet <NUM> and the lower polarizer <NUM>.

The optical sheet <NUM> is disposed over the diffusion plate <NUM>. The optical sheet <NUM> may include at least one diffusion sheet and at least one light-concentrating sheet such that more uniform surface light source can be incident on the liquid crystal panel <NUM> by diffusion or concentrating light passing through the diffusion plate <NUM>.

For example, the optical sheet <NUM> may include two light-concentrating sheets and one diffusion sheet sequentially disposed over the diffusion plate <NUM>. The light-concentrating sheets may include prism patterns or lenticular patterns. In this case, one of the light-concentrating sheets may include lenticular patterns, and the other may include prism patterns.

Meanwhile, the optical sheet <NUM> may further include a brightness enhancement film in which layers having different refractive indexes are alternately stacked or may the brightness enhancement film instead of the diffusion sheet.

The liquid crystal panel <NUM> and the backlight unit <NUM> are fastened and supported by the guide panel <NUM>, the support main <NUM>, and the cover bottom <NUM>.

First, the liquid crystal panel <NUM> is fastened on the guide panel <NUM>. The guide panel <NUM> may be formed along edges of the liquid crystal panel <NUM>, thereby having a plane structure of a substantially square or rectangular frame shape.

The guide panel <NUM> includes a first guide portion <NUM> and a second guide portion <NUM>. The first guide portion <NUM> may be a horizontal portion extending in an X direction, and the second guide portion <NUM> may be a vertical portion extending in a Z direction. One side end of the first guide portion <NUM> may be connected to an upper end of the second guide portion <NUM>, and the guide panel <NUM> may have a substantially L- shaped cross-section. Meanwhile, the other side end of the first guide <NUM> may protrude toward the Z direction. That is, the first guide <NUM> may have a protrusion on at the other side end.

The adhesive member <NUM> is proved between the first guide portion <NUM> of the guide panel <NUM> and the liquid crystal panel <NUM>, in particular the edge of the liquid crystal panel <NUM>, so that the liquid crystal panel <NUM> may be fixed to the first guide portion <NUM> by the adhesive member <NUM>.

In this case, the adhesive member <NUM> overlaps and contacts the exposed lower surface of the first substrate <NUM> and also overlaps and contacts at least partly the first polarizer <NUM>. The adhesive member <NUM> may be a foam pad having a cushioned property, and thus, the adhesive member <NUM> may act as a buffer absorbing external impacts. The adhesive member <NUM> may be formed of an elastic material and for example, formed of polyethylene, polyacryl, or polyurethane. However, the present disclosure is not limited thereto.

The support main <NUM> is disposed under the guide panel <NUM>. The support main <NUM> may be formed along the edges of the liquid crystal panel <NUM>, thereby having a plane structure of a substantially square or rectangular frame shape. The support main <NUM> includes a first support portion <NUM> and a second support portion <NUM>.

The first support portion <NUM> is disposed between the reflection plate <NUM> and the diffusion plate <NUM>. The second support portion <NUM> extends from an upper surface of an edge of the first support portion <NUM> toward the Z direction and surrounds side surfaces of the diffusion plate <NUM> and the optical sheet <NUM>. The second support portion <NUM> is disposed between the side surfaces of the diffusion plate <NUM> and the optical sheet <NUM> and the second guide portion <NUM> of the guide panel <NUM>.

The first support portion <NUM> maintains a certain distance between the LED array <NUM> and the diffusion plate <NUM> so that light from the LEDs <NUM> may be mixed to implement uniform surface light source.

The diffusion plate <NUM> is disposed on the first support portion <NUM>. Accordingly, the diffusion plate <NUM> and the optical sheet <NUM> are disposed between the first support portion <NUM> and the first guide portion <NUM>, and the upper surface of the first support portion <NUM> is in contact with a lower surface of the diffusion plate <NUM>, thereby supporting the diffusion plate <NUM> and the optical sheet <NUM>.

An outer surface of the first support portion <NUM> is adjacent to the second guide portion <NUM> of the guide panel <NUM> and is surrounded by the second guide portion <NUM>. An inner surface of the first support portion <NUM> has an inclination. That is, the first support portion <NUM> has an inclined surface 510a on the inner side. The inclined surface 510a reflects light from the LEDs <NUM> and sends the reflected light to the diffusion plate <NUM>.

In addition, the first support portion <NUM> has a support hole <NUM>, a first support groove <NUM>, and a second support groove <NUM>.

The support hole <NUM> is provided to correspond to the screw <NUM>. The support hole <NUM> includes a first hole part 512a in which a screw head <NUM> is disposed and a second hole part 512b in which a screw body <NUM> is disposed. An area of the first hole part 512a is larger than an area of the second hole part 512b on a planar view. At this time, the first hole part 512a is extended into the inclined surface 510a and its inner side is opened. The support hole <NUM> is substantially provided in the inner surface and the upper surface of the first support portion <NUM>.

The first support groove <NUM> is provided in the outer surface of the first support portion <NUM> and is disposed under the second support portion <NUM>. The first support groove <NUM> is provided in a portion where the screw <NUM> is not disposed. That is, the first support groove <NUM> is spaced apart from the support hole <NUM> and is provided in the first support portion <NUM>. A second cover portion <NUM> of the cover bottom <NUM> is disposed in the first support groove <NUM>.

The second support groove <NUM> is provided on a lower side of the inclined surface 510a of the first support portion <NUM>. Edges of the LED array <NUM> and the reflection plate <NUM> are disposed in the second support groove <NUM>, and the first support portion <NUM> presses and fastens the edges of the LED array <NUM> and the reflection plate <NUM>, thereby preventing them from being separated. Accordingly, it is not necessary to provide an additional structure for preventing the separation of the reflection plate <NUM>.

The support main <NUM> may be formed of plastic and/or may be molded. For example, the support main <NUM> may be formed of white polycarbonate (PC), but is not limited thereto.

The cover bottom <NUM> is provided under the support main <NUM>. The cover bottom <NUM> includes a first cover portion <NUM> and the second cover portion <NUM>. The first cover portion <NUM> is a horizontal plane and extends substantially in the X direction. The first cover potion <NUM> may have at least one bent part to displace various components necessary for driving the liquid crystal panel <NUM>.

The second cover portion <NUM> is a vertical plane and extends in the Z direction. The second cover portion <NUM> is bended from the first cover portion <NUM>. The second cover portion <NUM> is disposed in the first support groove <NUM> of the support main <NUM>. Accordingly, the second cover portion <NUM> is disposed between the second guide portion <NUM> of the guide panel <NUM> and the first support portion <NUM> of the support main <NUM> to thereby prevent the support main <NUM> from being pushed outward. As described above, the cover bottom <NUM> is combined with the support main <NUM> through the screw <NUM>. To do this, the first cover portion <NUM> of the cover bottom <NUM> has a cover hole <NUM>. The cover hole <NUM> is disposed under the support hole <NUM>.

Meanwhile, the cover bottom <NUM> has a protrusion <NUM> to correspond to the cover hole <NUM>, and a cover groove <NUM> is provided between the protrusion <NUM> and the second cover portion <NUM>. This will be described in detail later.

A press-fit nut <NUM>, which is commonly referred to as a PEM nut, is provided in the cover hole <NUM>. The press-fit nut <NUM> is also disposed in the second hole portion 512b of the support hole <NUM>. However, the present disclosure is not limited thereto. Alternatively, a screw thread may be formed in the cover hole <NUM> by a tapping method instead of the press-fit nut <NUM>.

The press-fit nut <NUM> is engaged with the screw <NUM>, so that the cover bottom <NUM> is combined with the support main <NUM>. In this case, the screw body <NUM> is disposed inside the press-fit nut <NUM>.

Meanwhile, an adhesive tape <NUM> is attached to an outer surface of the second guide portion <NUM> of the guide panel <NUM> and a lower surface of the first cover portion <NUM> of the cover bottom <NUM> to fix the guide panel <NUM> and the cover bottom <NUM>.

In the liquid crystal display device of the embodiment of the present disclosure, the width of the bezel can be reduced. This will be described with reference to <FIG>.

In <FIG>, when an embedded screw is applied, a first distance d1 corresponding to the width of the bezel depends on a second distance d2 from the outer surface of the guide panel <NUM> to a bottom end of the inclined surface 510a of the support main <NUM>. At this time, the second distance d2 is determined according to the type of screw <NUM> and a location of the cover hole <NUM> corresponding thereto. Further, in order to prevent separation the reflection plate <NUM>, it is additionally necessary to maintain a certain distance between the reflection plate <NUM> and the support main <NUM>. Accordingly, when the embedded screw is applied, the second distance d2 is increased.

On the other hand, when an opened screw is applied, the second distance d2 can be decreased as compared to the embedded screw because a wall enclosing the screw is not needed.

Meanwhile, the second distance d2 can be reduced as the location of the cover hole <NUM> corresponding to the screw <NUM> is closer to the outer surface of the guide panel <NUM>. In this case, in order to apply the press-fit nut <NUM> or form the screw thread by the tapping method, a third distance d3 that is a minimum interval from the edge of the first cover portion <NUM> is required. For example, the third distance d3 may be <NUM>, but is not limited thereto.

Accordingly, in the liquid crystal display device of the embodiment of the present disclosure, the protrusion <NUM> is provided in the first cover portion <NUM> to correspond to the cover hole <NUM> so that the location of the cover hole <NUM> is close to the outer surface of the guide panel <NUM>.

An edge of the protrusion <NUM> is disposed outside outer surfaces of the second cover portion <NUM> and the support main <NUM>, and the protrusion <NUM> overlaps the second guide portion <NUM> of the guide panel <NUM> along the Z direction. At this time, the edge of the protrusion <NUM> is disposed inside the outer surface of the second guide portion <NUM>.

As described above, in the liquid crystal display device of the embodiment of the present disclosure, the support main <NUM> and the cover bottom <NUM> are engaged by the screw <NUM>, so that repair and rework can be facilitated when defects or problems occur.

In addition, since the opened screw is applied and the protrusion <NUM> is provided in the second cover portion <NUM> of the cover bottom <NUM>, the tightening position of the screw <NUM> can be moved as much as possible to the guide panel <NUM>, so that the second distance d2 can be decreased and the width d1 of the bezel can be minimized. For example, the width d1 of the bezel may be <NUM> or less, beneficially, <NUM> or less.

In this case, a white screw may be used or white paint may be applied to the screw head <NUM> so that the opened screw <NUM> is not visibly recognized to the outside.

A detailed structure of the cover bottom and the support main of the liquid crystal display device of the embodiment of the present disclosure will be described in detail with reference to <FIG>.

<FIG> is a plan view schematically illustrating a combined structure of the cover bottom and the support main of the liquid crystal display device of the embodiment of the present disclosure,.

<FIG> is an enlarged plan view of the area A1 of <FIG>, <FIG> is an enlarged exploded perspective view of the area A1 of <FIG>, <FIG> is an enlarged plan view of the cover bottom of the embodiment of the resent disclosure, and <FIG> is an enlarged plan view of the support main of the embodiment of the present disclosure. In <FIG>, the areas indicated by the dotted line and including the area A1 represent screw-tightening parts.

In <FIG>, the support main <NUM> is disposed over the cover bottom <NUM>. At this time, the support main <NUM> is disposed along the edges of the cover bottom <NUM>.

The support main <NUM> and the cover bottom <NUM> are combined with each other by a plurality of screws <NUM>. The number and position of the plurality of screws <NUM> are not limited as illustrated and may vary.

The cover bottom <NUM> includes the first cover portion <NUM> and the second cover portion <NUM>, and the first cover portion <NUM> has the cover hole <NUM> with the press-fit nut <NUM> for tightening the screw <NUM> and the protrusion <NUM> corresponding to the cover hole <NUM>.

Here, the cover hole <NUM> may not be provided in advance and may be formed in the process of applying the press-fit nut <NUM>.

The protrusion <NUM> protrudes outward from the outer surface of the second cover portion <NUM>. In addition, the protrusion <NUM> also protrudes outward from the outer surface of the support main <NUM>. In this case, the distance d3 from the cover hole <NUM> to the edge of the protrusion <NUM> in the X direction is greater than the X direction length d4 of the second cover portion <NUM>.

The protrusion <NUM> is disposed between the adjacent second cover portions <NUM> in the Y direction. Accordingly, each second cover portion <NUM> is disposed between the adjacent protrusions <NUM> in the Y direction.

The protrusion <NUM> and the second cover portion <NUM> are spaced apart from each other, and the cover groove <NUM> is provided between the protrusion <NUM> and the second cover portion <NUM>. The cover groove <NUM> may facilitate bending of the second cover portion <NUM>.

Meanwhile, the support main <NUM> includes the first support portion <NUM> and the second support portion <NUM>, the first support portion <NUM> has the support hole <NUM> for tightening the screw <NUM>, and the support hole <NUM> has the first hoe portion 512a and the second hole portion 512b.

The screw head <NUM> is disposed in the first hole portion 512a, and the screw body <NUM> is disposed in the second hole portion 512b. The screw body <NUM> is also disposed in the cover hole <NUM>.

In addition, the first support portion <NUM> has the first support groove <NUM> in the outer surface thereof under the second support portion <NUM>, and the second cover portion <NUM> is disposed in the first support groove <NUM>. The X direction length d5 of the first support groove <NUM> may be equal to or greater than the X direction length d4 of the second cover portion <NUM>.

As described above, since the second cover portion <NUM> is disposed in the first support groove <NUM>, the protrusion <NUM> is disposed between the adjacent first support grooves <NUM> in the Y direction. Accordingly, the first support groove <NUM> is disposed between the adjacent protrusions <NUM> in the Y direction.

In the present disclosure, since the support main and the cover bottom are combined with each other by the screws, the repair and reassembly can be facilitated when defects occur or problems occur.

Additionally, in the present disclosure, by providing the protrusion, the screw-tightening position is moved as much as possible to the outside, so that the width of the bezel can be minimized.

Further, since it is not necessary to provide an additional structure for preventing the separation of the reflection plate, costs can be reduced.

Claim 1:
A liquid crystal display device, comprising:
a cover bottom (<NUM>) including a first cover portion (<NUM>) extending in a first direction (X) and a second cover portion (<NUM>) extending in a second direction; (Z)
a backlight unit (<NUM>) disposed over the cover bottom (<NUM>) and including a light source (<NUM>), a diffusion plate (<NUM>), and an optical sheet (<NUM>);
a support main (<NUM>) maintaining a distance between the light source (<NUM>) and the diffusion plate (<NUM>) and including a first support portion (<NUM>) and a second support portion (<NUM>); and
a liquid crystal panel (<NUM>) disposed over the backlight unit (<NUM>) and the support main (<NUM>),
wherein the support main (<NUM>) and the cover bottom (<NUM>) are combined with each other by a plurality of screws (<NUM>), and
the first support portion (<NUM>) is disposed between the first cover portion (<NUM>) and the diffusion plate (<NUM>), and
the second support portion (<NUM>) extends from an upper surface of an edge of the first support portion (<NUM>) towards the second direction (Z) and surrounds side surfaces of the diffusion plate (<NUM>) and the optical sheet (<NUM>), and
characterized in that
the first cover portion (<NUM>) includes a plurality of protrusions (<NUM>) protruding outward from an outer surface of the second cover portion (<NUM>) and corresponding to the plurality of screws (<NUM>), respectively, and
wherein the second cover portion (<NUM>) is disposed between adjacent protrusions (<NUM>).