KR20190048485A - Display device - Google Patents

Abstract

Disclosed is a display device. The display device of the present invention comprises: a display panel having a front surface displaying a screen and a rear surface facing the front surface; a guide panel including a horizontal part supporting a rear surface of the display panel, a vertical part extended from the horizontal part to a rear side of the display panel, a coupling part protruding from an outer surface of the vertical part, and a first hole adjacent to the coupling part and formed in the vertical part; and a front cover including a first part covering one side of the display panel, a second part extended from the first part to the rear side of the display panel and facing the vertical part, a second hole penetrating the second part and opened rearward, and a protrusion adjacent to the second hole and protruding from an inner surface of the second part, wherein the coupling part is inserted into the second hole and the protrusion is inserted into the first hole.

Description

DISPLAY DEVICE {DISPLAY DEVICE}

The present invention relates to a display device.

(PDP), an electro luminescent display (ELD), a vacuum fluorescent display (VFD), a liquid crystal display (PDP), and the like have been developed in recent years in response to the demand for display devices. Display) have been studied and used.

Among them, a liquid crystal panel of an LCD includes a TFT substrate and a color filter substrate facing each other with a liquid crystal layer and a liquid crystal layer interposed therebetween, and an image can be displayed using light provided from the backlight unit.

In recent years, studies have been actively conducted to improve the assembling structure of a display device while securing the rigidity of the display device.

The present invention is directed to solving the above-mentioned problems and other problems. Another object may be to provide a display device capable of improving the constraints of the structural design.

Another object is to provide a display device capable of improving the deformation of the back cover upon assembly and / or disassembly of the display device.

Yet another object is to provide a display device capable of improving the efficiency of the assembly process of a display device.

Another object of the present invention is to provide a display device capable of improving defects due to thread abrasion that occurs when a screw of a display device is fastened.

Another object of the present invention is to provide a display device capable of preventing a user from being hurt by the corner of the front cover.

According to an aspect of the present invention, there is provided a display device comprising: a display panel having a front surface for displaying an image and a rear surface facing the front surface; A vertical part extending to the rear of the display panel in the horizontal part, a coupling part projecting from the outer surface of the vertical part, and a coupling part formed adjacent to the coupling part and formed in the vertical part A guide panel having a first hole; A first part that covers one side of the display panel; a second part that extends rearward of the display panel in the first part and that faces the vertical part; a second part that penetrates through the second part, And a front cover disposed adjacent to the second hole and having a protrusion protruding from the inner surface of the second part, wherein the engaging portion is fitted in the second hole, It is possible to provide a display device inserted in the first hole.

The second part may include a step formed inside the front cover, and the second hole and the second projection may be provided on the stepped part.

Wherein the engaging portion includes: a third portion protruding from an outer surface of the vertical portion; And a fourth part connected to the third part and facing the vertical part, and the third part of the shrinking part can be fitted in the second hole.

The length of the fourth part may be longer than the length of the third part along the longitudinal direction of the vertical part of the display device.

The thickness of the stepped portion may be the same as the height at which the third part protrudes.

The fourth part may be in contact with or in contact with the outer surface of the stepped portion.

The thickness of the fourth part may be smaller than the step between the step and the second part.

The display panel includes a first short side; A second short side facing the first short side; A first long side connecting the first short side and the second short side; And a second long side connecting the first short side and the second short side and facing the first long side, wherein the front cover includes: a first body covering the first short side; A second body connected to the first body and covering the first long side; A third body connected to the second body and covering the second short side; And a fourth body connected to the third body and covering the second long side, the first body covers a corner where the first short side of the display panel meets the second long side, And cover at least a part of the second long side of the display panel.

And a back cover having a back plate located at a rear side of the front cover, a side wall bent forward of the back plate and covering the second part, and a locking part bent inward of the side wall,

Wherein the front cover includes: a hole penetrating the second part; And a locking protrusion protruding outward from the front cover in the second part, and the locking part may be positioned between the first part and the locking protrusion.

The locking protrusion is bent outward from the front cover in the second part to form a space, and the locking part can face a space formed by the locking protrusion.

Effects of the display device according to the present invention will be described as follows.

According to at least one of the embodiments of the present invention, the restriction of the structural design of the display device can be improved.

According to at least one of the embodiments of the present invention, deformation of the back cover during assembly and / or disassembly of the display device can be improved.

According to at least one of the embodiments of the present invention, the efficiency of the assembling process of the display device can be improved.

According to at least one of the embodiments of the present invention, it is possible to improve the defect caused by the screw thread wear caused when the screw of the display device is fastened.

According to at least one of the embodiments of the present invention, it is possible to prevent the user from being hurt by the corner of the front cover.

Further scope of applicability of the present invention will become apparent from the following detailed description. It should be understood, however, that the detailed description and specific examples, such as the preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art.

1 to 11 are views showing examples of display devices related to the present invention.
12 to 16 are views showing examples of a front cover according to an embodiment of the present invention.
17 to 21 are views showing examples of a coupling structure of a front cover and a guide panel according to an embodiment of the present invention.
22 to 26 are views showing examples of a coupling structure of a front cover and a back cover according to an embodiment of the present invention.
FIGS. 27 to 31 are views showing examples of a display device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted.

The terms first, second, A, B, (a), (b), upper and lower sides used in the following description can be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements.

The suffix " module " and " part " for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

Further, when an element is described as being "connected", "coupled", or "connected" to another element, the element may be directly connected or connected to the other element, It should be understood that an element may be "connected," "coupled," or "connected."

In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. 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 invention as claimed. , ≪ / RTI > equivalents, and alternatives.

The terms height, length, width, width and the like used in the following description may be used for convenience of explanation and do not have their own meaning or role.

Hereinafter, a liquid crystal display device (LCD) will be described as an example of the display panel, but the display panel applicable to the present invention is not limited to the liquid crystal panel.

1, the display device includes a first long side LS1, a second long side LS2, a first long side LS1, and a second long side LS2 opposite to the first long side LS1. A first short side SS1 adjacent to the two long side LS2 and a second short side SS2 opposite to the first short side SS1.

The first short side SS1 is referred to as a first side area and the second short side SS2 is referred to as a second side area opposite to the first side area, The area LS1 is referred to as a third side area adjacent to the first side area and the second side area and located between the first side area and the second side area and the second long side area LS2, May be referred to as a fourth side area adjacent to the first side area and the second side area and located between the first side area and the second side area and facing the third side area.

The lengths of the first and second long sides LS1 and LS2 are longer than the lengths of the first and second short sides SS1 and SS2. However, the lengths of the first and second long sides LS1 and LS2, The lengths of the first and second short sides SS1 and SS2 may be equal to or substantially equal to the lengths of the first and second short sides SS1 and SS2.

The first direction DR1 may be parallel to the long side LS1 or LS2 of the display panel 100. The second direction DR2 may be a direction parallel to the short side SS1 or SS2 of the display panel 100. [ The third direction DR3 may be a direction perpendicular to the first direction DR1 and / or the second direction DR2.

The first direction DR1 and the second direction DR2 may collectively be referred to as a horizontal direction. The third direction DR3 may be referred to as a vertical direction.

The side on which the display device displays an image may be referred to as a forward direction or a front side (front side or front surface). When a display device displays an image, the side on which an image can not be observed can be referred to as a rearward direction or a rear side (rear side or rear surface). When looking at the display from the front or the front, the first long side (LS1) side can be referred to as the upper side or the upper surface. And the second long side LS2 side may be referred to as a lower side or a lower surface. The first short side SS1 may be referred to as a right side or the right side and the second short side SS2 may be referred to as a left side or a left side.

The first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2 may be referred to as an edge of a display device. A corner where the first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2 meet with each other can be referred to as a corner. For example, a point where the first long side LS1 and the first short side SS1 meet is a first corner C1, a point where the first long side LS1 and the second short side SS2 meet is a second corner C2 A point where the second short side SS2 meets the second long side LS2 is a third corner C3 and a point where the second long side LS2 and the first short side SS1 meet is a fourth corner C4. .

The direction from the first short side SS1 to the second short side SS1 or the direction from the second short side SS2 toward the first short side SS1 may be referred to as the left and right direction LR. The direction from the first long side LS1 to the second long side LS2 or the direction from the second long side LS2 to the first long side LS1 may be called the up and down direction UD.

Referring to FIGS. 1 and 2, the back cover 150 may be coupled to the display panel 110. In order for the back cover 150 to be coupled with the display panel 110, the back cover 150 and / or other structures adjacent thereto may include projections, sliding portions, engaging portions, and the like.

Referring to FIG. 3, the front cover 105 may cover at least a part of the front and side surfaces of the display panel 110. The front cover 105 can be divided into a front cover positioned on the front side of the display panel 110 and a side cover positioned on the side of the display panel 110. The front cover and the side cover may be separately configured. Either the front cover or the side cover may be omitted.

The display panel 110 is provided on the front surface of the display device 100 and can display an image. The display panel 110 can display an image by outputting RGB (red, green or blue) for each pixel by a plurality of pixels at a timing. The display panel 110 may be divided into an active area in which an image is displayed and a de-active area in which an image is not displayed. The display panel 110 may include a front substrate and a rear substrate facing each other with a liquid crystal layer interposed therebetween.

The front substrate may include a plurality of pixels consisting of red (R), green (G) and blue (B) sub-pixels. The front substrate can emit light corresponding to the red, green, or blue color according to a control signal.

The back substrate may include switching elements. The rear substrate can switch the pixel electrodes. For example, the pixel electrode can change the molecular arrangement of the liquid crystal layer according to a control signal applied from the outside. The liquid crystal layer may include liquid crystal molecules. The liquid crystal molecules can change the arrangement in accordance with the voltage difference generated between the pixel electrode and the common electrode. The liquid crystal layer may transmit or block the light provided from the backlight unit 120 to the front substrate.

The backlight unit 120 may be positioned behind the display panel 110. The backlight unit 120 may include light sources. The backlight unit 120 may be coupled to the frame 130 in front of the frame 130.

The backlight unit 120 may be driven by a whole driving method or a partial driving method such as local dimming, impulsive, or the like. The backlight unit 120 may include an optical sheet 125 and an optical assembly 123.

The optical sheet 125 may allow light from the light source to be uniformly transmitted to the display panel 110. The optical sheet 125 may be composed of layers. For example, the optical sheet 125 may include a prism sheet, a diffusion sheet, and the like.

The optical sheet 125 may have a coupling portion 125d. The engaging portion 125d may be coupled to the front cover 105, the frame 130, and / or the back cover 150. [ Alternatively, the engaging portion 125d may be fastened to the structure formed or joined on the front cover 105, the frame 130, and / or the back cover 150. [

The optical assembly 123 may be located behind the optical sheet 125. [ The optical assembly 123 can provide light to the optical sheet 125. The optical assembly 123 may include a light source that generates light.

The frame 130 may serve to support the components of the display device 100. For example, a configuration such as the backlight unit 120 may be coupled to the frame 130. The frame 130 may be made of a metal such as an aluminum alloy.

The back cover 150 may be located on the rear or rear side of the display device 100. The back cover 150 may be coupled to the frame 130 and / or the front cover 105. For example, the back cover 150 may be an injection-molded material of a resion.

Referring to FIG. 4 (a), the backlight unit 120 may be positioned in front of the frame 130. The backlight unit 120 may include an optical assembly 123 and an optical sheet 125. The optical assembly 123 may be positioned between the optical sheet 125 and the frame 130. [ The optical assembly 123 may include a diffuser plate 129.

The optical sheet 125 and / or the diffuser plate 129 may engage the frame 130 at the edge of the frame 130. The optical sheet 125 and / or the diffuser plate 129 can be directly seated on the edge of the frame 130. [ That is, the optical sheet 125 and / or the diffuser plate 129 can be supported by the frame 130. The edge surface of the reflective sheet 125 can be covered by the first guide panel 117. [ For example, the optical sheet 125 and / or the diffuser plate 129 may be positioned between the edge of the frame 130 and the flange 117a of the first guide panel 117.

In front of the optical sheet 125, the display panel 110 can be positioned. The edge of the display panel 110 may be supported by the first guide panel 117. An edge region of the front surface of the display panel 110 may be covered by the front cover 105. [ For example, it is meant that a portion of the display panel 110 may be positioned between the first guide panel 117 and the front cover 105.

Referring to FIG. 4 (b), the optical sheet 125 and / or the diffuser plate 129 may be coupled to the second guide panel 113. That is, the second guide panel 113 may be coupled to the frame 130, and the optical sheet 125 and / or the diffuser plate 129 may be coupled to the second guide panel 113. The second guide panel 113 may be made of a different material from the frame 130. The frame 130 may be configured to enclose the first and second guide panels 117 and 113. The first or second guide panel 117 or 113 may be referred to as a holder or a support member.

Referring to FIG. 4 (c), the front cover 105 may not cover the front surface of the display panel 110. That is, one end of the front cover 105 may be positioned on the side of the display panel 110.

5, the backlight unit 120 may include an optical assembly 123 and an optical sheet 125 positioned on the front side of the optical assembly 123.

The optical assembly 123 may include a substrate 122, at least one optical module 124, a reflective sheet 126, and a diffuser plate 129. The optical assembly 123 may not include some of these configurations.

The substrate 122 may be in the form of a plurality of straps extending in a first direction and spaced a predetermined distance in a second direction orthogonal to the first direction.

On the substrate 122, at least one optical module 124 may be mounted. An electrode pattern for connecting the adapter and the optical module 124 to the substrate 122 may be formed. For example, a carbon nanotube electrode pattern may be formed on the substrate 122 to connect the optical module 124 and the adapter.

The substrate 122 may be composed of at least one of polyethylene terephthalate (PET), glass, polycarbonate (PC), and silicon. The substrate 122 may be a printed circuit board (PCB) on which at least one optical module 124 is mounted.

The optical module 124 may be disposed on the substrate 122 at a predetermined interval in the first direction. The diameter of the optical module 124 may be greater than the width of the substrate 122. That is, the length in the second direction of the substrate 122.

The optical module 124 may be a light emitting diode (LED) chip or a light emitting diode package including at least one light emitting diode chip.

The optical module 124 may be comprised of a colored LED or a white LED that emits at least one of the colors such as red, blue, green, and the like. The colored LED may include at least one of a red LED, a blue LED, and a green LED.

On the front side of the substrate 122, a reflective sheet 126 may be positioned. The reflective sheet 126 may be located on an area of the substrate 122 other than the area where the optical module 124 is formed. The reflective sheet 126 may have a plurality of through holes 235.

The reflective sheet 126 can reflect the light emitted from the optical module 124 to the front side. Further, the reflection sheet 126 can reflect the light reflected from the diffusion plate 129 again.

The reflective sheet 126 may comprise at least one of a metal and a metal oxide which are reflective materials. For example, the reflective sheet 126 may include a metal and / or a metal oxide having a high reflectance such as at least one of aluminum (Al), silver (Ag), gold (Au), and titanium dioxide (TiO2) .

The supporter 200 may be coupled to the reflective sheet 126. The supporter 200 may have a shape protruding forward from the reflective sheet 126. For example, supporter 200 may be positioned between reflective sheet 126 and diffuser plate 129. Or the supporter 200 may be positioned between the reflective sheet 126 and the optical sheet 125. [ The distance between the reflective sheet 126 and the diffuser plate 129 can be maintained or the distance between the reflective sheet 126 and the optical sheet 125 can be maintained by the supporter 200. [

Resins can be deposited on the optical module 124 and / or the reflective sheet 126. The resin may act to diffuse the light emitted from the optical module 124.

The diffuser plate 129 may diffuse the light emitted from the optical module 124. The plurality of optical modules 124 may be arranged as a point light source. The light provided forward from the plurality of optical modules 124 may have different brightness depending on the distance from the optical module 124. The diffusion plate 129 can uniformize the illumination profile according to the arrangement of the plurality of optical modules 124.

The optical sheet 125 can be positioned in front of the diffuser plate 129. [ The rear surface of the optical sheet 125 is in close contact with the diffusion plate 129 and the front surface of the optical sheet 125 can be in close contact with the rear surface of the display panel 110 (see FIG. 1).

The optical sheet 125 may include at least one sheet. In detail, the optical sheet 125 may include one or more prism sheets and / or one or more diffusion sheets. The plurality of sheets included in the optical sheet 125 may be in an adhered and / or adhered state.

The optical sheet 125 may be composed of a plurality of sheets having different functions. For example, the optical sheet 125 may include first to third optical sheets 125a to 125c. For example, the first optical sheet 125a may be a diffusion sheet, and the second and third optical sheets 125b and 125c may be a prism sheet. The number and / or position of the diffusion sheet and prism sheet may be varied.

The diffusion sheet can prevent the light coming from the diffusion plate 129 from being partially concentrated, thereby making the distribution of light more uniform. The prism sheet can collect light from the diffusion sheet to provide light to the display panel 110.

The engaging portion 125d may be formed on at least one of the sides or edges of the optical sheet 125. [ The engaging portion 125d may be formed on at least one of the first to third optical sheets 125a to 125c.

The engaging portion 125d may be formed at the long side of the optical sheet 125. [ The engaging portion 125d formed on the side of the first long side and the engaging portion 125d formed on the side of the second long side may be asymmetric. For example, the position and / or number of the engaging portion 125d of the first long side and the engaging portion 125d of the second long side may be different from each other.

Referring to FIG. 6A, the optical module 124 may be disposed on the front surface of the substrate 122. The plurality of optical modules 124 may be spaced apart. A plurality of optical modules 124 may provide light (or light) forward.

A reflective sheet 126 may be disposed on the front surface of the substrate 122. [ The optical module 124 may be disposed between the reflective sheets 126.

The diffusion plate 129 may be positioned in front of the optical module 124. [ The diffuser plate 129 may be positioned in front of the reflective sheet 126. The diffuser plate 129 may be spaced apart from the optical module 124. The diffusion plate 129 may be disposed apart from the reflection sheet 126. [

The air layer AL may be formed between the diffusion plate 129 and the optical module 124. The air layer AL may be formed between the diffusion plate 129 and the reflective sheet 126. The air layer AL may comprise a stable gas. For example, the air layer AL may comprise a gas which is the same as or similar to the composition of the air. For example, the air layer AL may comprise nitrogen and / or oxygen.

The optical sheet 125 may be disposed on the entire surface of the diffusion plate 129. [ The optical sheet 125 may include first to third optical sheets 125a, 125b, and 125c. The first optical sheet 125a may be positioned on the front surface of the diffuser plate 129. The second optical sheet 125b may be positioned on the front surface of the first optical sheet 125a. And the third optical sheet 125c may be positioned on the front surface of the third optical sheet 125b.

Referring to FIG. 6B, the optical sheet 125 may include a first optical sheet 125a and a second optical sheet 125b. The first optical sheet 125a may be a diffusion sheet. The second optical sheet 125b may be a prism sheet.

Referring to FIG. 6 (c), the optical sheet 125 may be positioned in front of the optical module 124. The optical sheet 125 may be positioned in front of the reflective sheet 126. The optical sheet 125 may include a first optical sheet 125a and a second optical sheet 125b. The first optical sheet 125a may be a diffusion sheet. The second optical sheet 125b may be a prism sheet.

The air layer AL may be formed between the optical sheet 125 and the reflective sheet 126. The air layer AL may be formed between the optical sheet 125 and the optical module 124.

Referring to FIG. 7, the reflective sheet 126 may be coupled to the frame 130. For example, the reflective sheet 126 may be coupled to a seating portion 132 formed on the inside of the frame 130. The reflective sheet 126 may have a three-dimensional shape corresponding to the shape of the seating portion 132. [

The reflective sheet 126 may include a transverse engagement portion HH and / or a longitudinal engagement portion VH. The transverse engagement portion HH and / or the longitudinal engagement portion VH may have the shape of an opening formed along the sides of the reflection sheet 126. [

The transverse engagement portion HH may be an opening formed along two opposing sides of the reflection sheet 126. [ The transverse engagement portion HH may be an opening formed along the long side of the reflection sheet 126, for example.

The longitudinal coupling portion (VH) may be an opening formed along two opposing sides of the reflection sheet (126). The longitudinal coupling portion VH may be an opening formed along the short side of the reflection sheet 126, for example.

The frame 130 may include a lateral projection 130H and a vertical projection 130V. The transverse protrusion 130H or the vertical protrusion 130V may be formed along two opposite sides of the frame 130. [ For example, the transverse protrusion 130H may be formed along the long side of the frame 130. For example, the vertical projection 130V may be formed along the short side of the frame 130. [

The transverse protrusion 130H or the vertical protrusion 130V can protrude forward. The transverse protrusion 130H or the vertical protrusion 130V can engage with the reflective sheet 126. [ For example, the transverse protrusion 130H can engage with the transverse engagement portion HH of the reflective sheet 126. [ For example, the vertical projection 130V can engage with the longitudinal engagement portion VH of the reflective sheet 126. [

The guide panel GP may include an elongated bar shape. The guide panel GP may be disposed on the front surface of the reflective sheet 126. [ The guide panel GP may be disposed along the edge of the reflective sheet 126. [ The guide panel GP can be formed by a combination of elongated rods.

The guide panel GP may include plastic. The guide panel GP may be formed by injection. The guide panel GP may include a metal. The guide panel GP can be formed by press working.

The substrate 122 may be positioned between the frame 130 and the reflective sheet 126. The optical module 124 may be disposed on the front surface of the substrate 122. The optical module 124 may be located in the lens hole 235 formed in the reflective sheet 126.

The plurality of substrates 122 may be arranged in the horizontal direction and / or the vertical direction. The substrate 122 may be electrically connected to the signal line 121. The substrate 122 may be provided with electrical and / or electrical signals from the signal line 121.

The lens hole 125 formed in the reflective sheet 126 may be formed corresponding to the light source 203 disposed on the substrate 122. [ The light source 203 may be located in the lens hole 125. A part of the light source 203 and the substrate 122 may be exposed forward through the lens hole 125. [ The lens 124b may be positioned in front of the light source 203. [ The lens 124b may be coupled to a portion of the substrate 122 exposed frontward through the lens hole 125. [

The reflective sheet 126 can form the supporter hole 205. The supporter 200 can be coupled to the supporter hole 205. The supporter 200 can support the diffuser plate 129 (see FIG. 5) and / or the optical sheet 125 (see FIG. 5) located in front of the reflective sheet 126. By the supporter 200, the reflective sheet 126 can be separated from the diffuser plate 129 (see FIG. 5) and / or the optical sheet 125 (see FIG. 5).

The reflective sheet 126 can form a plurality of fixing pin holes 206. The fixing pin 202 can be coupled to the fixing pin hole 206. The fixing pin 202 may be coupled to the frame hole 204 formed in the frame 130. The fixing pin 202 can fasten the reflecting sheet 126 to the frame 130.

8, the optical layer 123 may include a substrate 122, a reflective sheet 126, an optical assembly 124, and a light guide plate 128.

The optical layer 123 may be positioned in front of the frame 130. For example, the optical layer 123 may be positioned between the frame 130 and the optical sheet 125. The optical layer 123 may be supported by the frame 130.

The substrate 122 may be located inside the frame 130. The substrate 122 may be coupled to the first guide panel 117. The substrate 122 may be directly coupled to the first guide panel 117. For example, the substrate 122 may be configured to be coupled to at least one of the first guide panel 117, the frame 130, and the top case 105.

The substrate 124 may be positioned adjacent the side of the reflective sheet 126 and / or the light guide plate 128. That is, it means that the front surface of the substrate 124 can be directed to the optical layer 123. The substrate 124 and the reflective sheet 126 and / or the light guide plate 128 may be spaced apart from each other by a predetermined distance.

9, the backlight unit 120 includes an optical layer 123 including a substrate 122, at least one optical assembly 124, a reflective sheet 126, and a light guide plate 128, and an optical layer 123 And an optical sheet 125 positioned on the front side of the optical sheet 125. [

The substrate 122 may be located on one side of the optical layer 123. The substrate 122 may extend in the longitudinal direction of the optical layer 123. The optical assembly 124 may be disposed on the substrate 122 with predetermined spacing. Most of the light emitted from the optical assembly 124 can be transmitted into the light guide plate 128.

The reflective sheet 126 may be positioned behind the light guide plate 128. The reflective sheet 126 may be emitted from the optical assembly 124 and reflected by the light guide plate 128 to reflect light toward the reflective sheet 126 toward the front of the light guide plate 128.

The reflective sheet 126 may comprise at least one of a metal and a metal oxide which are reflective materials. For example, the reflective sheet 126 may include a metal and / or a metal oxide having a high reflectance such as at least one of aluminum (Al), silver (Ag), gold (Au), and titanium dioxide (TiO2) can do.

The reflective sheet 126 may be formed by depositing and / or coating a metal or metal oxide. The reflective sheet 126 may be printed with an ink containing a metal material. The reflection sheet 126 may have a vapor deposition layer formed by a vacuum vapor deposition method such as a thermal vapor deposition method, an evaporation method, or a sputtering method. The reflection sheet 126 may be formed with a coating layer and / or a printing layer using a printing method, a gravure coating method, or a silk screen method.

The optical sheet 125 may include one or more prism sheets and / or one or more diffusion sheets. The plurality of sheets included in the optical sheet 125 may be in an adhered and / or adhered state.

The optical sheet 125 may be composed of a plurality of sheets having different functions. For example, the optical sheet 125 may include first to third optical sheets 125a to 125c. The first optical sheet 125a may be a diffusion sheet, and the second and third optical sheets 125b and 125c may be a prism sheet. The number and / or position of the diffusion sheet and prism sheet may be varied.

The diffusion sheet can prevent the light coming from the light guide plate 128 from being partially concentrated, thereby making the brightness of the light more uniform. The prism sheet can condense the light coming from the diffusion sheet and allow light to enter the display panel 110 vertically.

The engaging portion 125d may be formed on at least one of the corners of the optical sheet 125. [ The engaging portion 125d may be formed on at least one of the first to third optical sheets 125a to 125c.

The engaging portion 125d may be formed at a long side edge of the optical sheet 125. [ The engaging portion 125d formed on the side of the first long side and the engaging portion 125d formed on the side of the second long side may be asymmetric. For example, the position and / or number of the engaging portion 125d of the first long side and the engaging portion 125d of the second long side may be different from each other.

Referring to FIG. 10, the optical assembly 124 may emit light from the lower side 110c to the upper side 110d of the display panel 110. FIG. That is, the light emitted from the optical assembly 124 is diffused from the lower side 110c to the upper side 110d of the display panel 110 by the light guide plate 128 to provide light to the entire display panel 110 It can be done.

Referring to FIG. 11 (a), the optical assembly 124 may be located on the right side 110a of the display panel 110. FIG. However, the present invention is not limited thereto, and the optical assembly 124 may be located on the left side 110b of the display panel 110. [

Referring to FIG. 11 (b), the optical assembly 124 may be positioned on the lower side 110c and the upper side 110d of the display panel 110. 9 (c), the optical assembly 124 may be positioned on the right side 110a and the left side 110b of the display panel 110. In addition, as shown in FIG.

12 and 13, the front cover 500 can be produced by a roll-froming process. The raw material 500r of the front cover 500 may be in the form of a coil. The raw material (500 m) unwound from the coil can pass through the roller (R). The raw material 500m of the front cover 500 may have a long elongated shape after passing through the roller R. [

The raw material 500m of the front cover 500 may have a gap 500e through further processing after the roll forming process. The front cover 500 may include a first body 500a, a second body 500b, a third body 500c, and a fourth body 500d. The first body 500a, the second body 500b, the third body 500c and the fourth body 500d can be distinguished from each other by the gaps 500e and 500f.

The first body 500a may form the first short side SS1 of the display device. The second body 500b may form the first long side LS1 of the display device. The third body 500c may form the second short side SS2 of the display device. The fourth body 500d may form the second long side LS2 of the display device.

The gap 500e may be positioned adjacent to a corner formed by the first body 500a and the second body 500b. The gap 500e may be positioned adjacent to a corner formed by the second body 500b and the third body 500c. The gap 500e may be positioned adjacent to a corner formed by the third body 500c and the fourth body 500d. The gap 500f may be positioned between the fourth body 500d and the first body 500a.

By producing the front cover by the roll forming process, there is an advantage that a front cover with a thin thickness can be formed as compared with the production of the front cover by the extrusion process.

When the front cover is produced by an extrusion process, material restrictions may occur. For example, materials suitable for the extrusion process may be limited to aluminum, magnesium, and the like. On the other hand, there is an advantage that various materials can be used by producing the front cover by the roll forming process.

If the front cover is produced by an extrusion process, the surface may need to be trimmed through an additional process. For example, after the extrusion process, anodizing or spraying may be required. On the other hand, when a front cover is produced by a roll forming process, there is an advantage that a clean surface can be obtained and an additional process for surface treatment is not necessary.

13 and 14, the front cover 500 includes a first part 510, a second part 520, a third part 530, a fourth part 540, and a fifth part 550, . ≪ / RTI > The first part 510 may be a long elongated plate. The second part 520 may be a plate extended along the longitudinal direction of the first part 510. The second part 520 may bend and extend in the first part 510. The second part 520 may have an inclination that is inclined with respect to the vertical direction of the first part 510 or the first part 510.

The third part 530 may be a plate elongated along the longitudinal direction of the second part 520. The third part 530 may be bent and extended in the second part 520. The third part 530 may extend parallel to the longitudinal direction of the first part 510 or may be opposite or opposite to the first part 510. The fourth part 540 may be a plate elongated along the longitudinal direction of the third part 530. The fourth part 540 may be bent and extended in the third part 530. The fourth part 540 may extend in parallel with the vertical direction of the first part 510 or may intersect the first part 510.

The fifth part 550 may bend and extend in the first part 510 and may face the second part 520. The first part 510 to the fifth part 550 may be formed of one body.

14 is a cross-sectional view of the first body 500a, the second body 500b, the third body 500c, or the fourth body 500d of the front cover 500.

Referring to FIGS. 15 and 16, the first body 500a may include a sixth part 520ad. The sixth part 520ad may be positioned perpendicular to the longitudinal direction of the first body 500a. The sixth part 520ad may be connected to the first part 510a and the second part 520a. The sixth part 520ad may be curved in the first part 510a and the second part 520a. The first part 510a to the sixth part 520ad may be formed of one body.

The sixth part 520ad may be aligned with the second part 520d. The gap 500f may be positioned between the sixth part 520ad and the second part 520d. The gap 500f may be positioned between the first part 510a of the first body 500a and the first part 510d of the fourth body 500d.

The gap 500f may be positioned between the first body 500a and the fourth body 500d. The first body 500a and the fourth body 500d may not contact each other. The first body 500a and the fourth body 500d may form an inner third corner C3 '. The inner third corner C3 'may be a virtual corner. The first part 510a and the sixth part 520ad may form an outer third corner C3. The outer third corner C3 can be machined so as not to be sharp through the drawing process. Therefore, it is possible to prevent the user from being injured by the third outside corner C3.

An angle formed by a line connecting the inner third corner C3 'and the outer third corner C3 with the second long side LS2 of the front cover 500 can be referred to as theta 2. The angle formed by the gap 500f and the second long side LS2 of the front cover 500 can be referred to as theta 1. Alternatively, the angle formed by the first body 500a and the second long side LS2 of the front cover 500 may be referred to as theta1. Alternatively, the angle formed by the fourth body 500d and the second long side LS2 of the front cover 500 may be referred to as theta1. theta 1 can be formed larger than theta 2.

17 to 20, the guide panel 700 may be coupled to the front cover 500. The fourth part 540 may include a stepped portion 540a. The stepped portion 540a may be stepped inside the front cover 500 in the fourth part 540. [ The stepped portion 540a may extend along the fourth part. The stepped portion may be formed in plural along the longitudinal direction of the fourth part. 17 may be a part of the first body 500a, the second body 500b, the third body 500c, or the fourth body 500d of the front cover 500. The stepped portion 540a may be formed by pressing the fourth part 540.

The stepped portion 540a may include a first hole 540c. The first hole 540c can pass through the stepped portion 540a. The first hole 540c may be opened to the rear of the front cover 500. [ The first hole 540c may have a rectangular shape. The first hole 540c may have a height H10 in the longitudinal direction of the fourth part 540, the second direction DR2, the y axis direction, or the up and down direction UD. The first hole 540c may have a width H13 in the width direction of the fourth part 540 and a width H13 in the third direction DR3 or the z axis direction. The first hole 540c may be referred to as a slot.

The stepped portion 540a may include the projection 540b. The projection 540b may be formed by pressing the stepped portion 540a. The projection 540b may be adjacent to the first hole 540c. The protrusion 540b may protrude to the inside of the front cover 500. [ The protrusion 540b can form the space S1. The projection 540b may have a rectangular shape. The projection 540b may have a height H15 in the longitudinal direction of the fourth part 540, the second direction DR2, the y-axis direction, or the vertical direction UD. The projection 540b may have a width H14 in the width direction of the fourth part 540 and a width H14 in the third direction DR3 or the z axis direction. The projection 540b may include a third hole 540d. And the third hole 540d can penetrate the protrusion 540b.

The guide panel 700 may include a horizontal portion 700H (see FIG. 26) and a vertical portion 700V. The horizontal portion 700H can face the rear surface of the display panel 110 (see Fig. 26) and can support the display panel 110. [ The display panel 110 can be fixed to the horizontal portion 700H of the guide panel 700 by the adhesive member AD. The vertical part 700V may be connected to the horizontal part 700H. The outer surface of the vertical portion 700V may be in contact with or in contact with the fourth part 540 of the front cover 500. 18 may be a part of the vertical portion 700V of the guide panel 700. Fig.

The vertical portion 700V may include a coupling portion 740. The engaging portion 740 may be formed on the outer surface of the vertical portion 700V. The engaging portions 740 may be formed along the vertical portion 700V. The coupling part 740 may include a first part 710 protruding from an outer surface of the vertical part 700V and a second part 720 connected to the first part 710. [ The first part 710 may have a rectangular shape. The first part 710 may have a height H9 in a second direction DR2, a y-axis direction, or a vertical direction UD. The first part 710 may have a width H12 in the third direction DR3 or in the z-axis direction. The second part 720 may have a rectangular shape. The second part 720 may face the vertical part 700V. The second part 720 may have a height H11 in a second direction DR2, a y-axis direction, or a vertical direction UD. The second part 720 may have a width H12 in the third direction DR3 or in the z-axis direction. The height H11 of the second part 720 may be greater than the height H9 of the first part 710. [ The width H12 of the first part 710 and the width H12 of the second part 720 may be the same. The engaging portion 740 can be referred to as a protrusion.

The vertical portion 700V may include a second hole 730. [ The second hole 730 may be adjacent to the coupling portion 740. The second holes 730 may be formed along the vertical portion 700V. The second hole 730 may be formed in the same number as the coupling portion 740. The second hole 730 may penetrate the vertical portion 700V. The second hole 730 may have a rectangular shape. The second hole 730 may have a height H16 in a second direction DR2, a y-axis direction, or a vertical direction UD. The second hole 730 may have a width H17 in the third direction DR3 or the z-axis direction.

The engaging portion 740 can be fitted in the first hole 540c. The first part 710 of the coupling part 740 may be inserted into the first hole 540c. The second part 720 of the engaging part 740 may be in contact with or in contact with the outer surface of the stepped part 540a. The outer surface of the vertical portion 700V may be in contact with or in contact with the inner surface of the stepped portion 540a.

The protrusion 540b may be inserted into the second hole 730. [ When the front cover 500 and the guide panel 700 are coupled to each other, the engaging portion 740 can be inserted into the first hole 540c and the protrusion 540b can be inserted into the second hole 730. [

Referring to FIG. 21, the stepped portion 540a may be separated from the fourth portion 540 by a predetermined length H18. The protrusion 540b may protrude at a predetermined height H7 from the stepped portion 540a. The thickness H3 of the fourth part 540, the thickness H2 of the stepped portion 540a, and the thickness H8 of the projection 540b may be the same. The thickness H2 of the stepped portion 540a may be larger than the thickness H8 of the projection 540b. The thickness H3 of the fourth part 540 may be greater than the thickness H2 of the stepped portion 540a.

The vertical part 700V may be spaced apart from the fourth part 540 by a predetermined distance H1. The vertical portion 700V may have a thickness H6. The height H7 of the projection 540b may be greater than or equal to the thickness H6 of the vertical portion 700V. The height H5 of the first part 710 of the coupling part 740 may be greater than or equal to the thickness H2 of the stepped part 540a. The height H4 of the second part 720 of the engaging part 740 may be less than or equal to the step length H18 of the stepped part 540a. Accordingly, the engaging portion 740 may not protrude outside the fourth part 540.

Through the roll forming process, the front cover can have a thin thickness, and can have a structure to engage with the guide panel without a separate screw.

Referring to Figs. 22 to 26, the front cover 500 can be fastened to the back cover 600. Fig. The front cover 500 may have a locking projection 560. The locking protrusion 560 may be formed on the third part 530 and / or the fourth part 540. The locking protrusion 560 may be formed by pressing the front cover 500. The bending portion 570 may be formed while the locking protrusion 560 is formed. The locking protrusion 560 can form the space S2. The bent portion 570 may be formed in the third part 530 and / or the fourth part 540. [ For example, the front cover 500 may be formed of a steel plate, and the steel plate may be pressed to form the locking protrusion 560 and the bent portion 570. The bent portion 570 may be referred to as a hole. The back cover 600 may include a back plate 610, a side wall 620, a front wall 640, and a latch 630. The back plate 610 may be a flat plate. The backplate 610 may cover or face the backside of the frame 130 as described above or below. The back plate 610 may face or face the first part 510 of the front cover 500. The side wall 620 may extend from the back plate 610 while being bent. The side wall 620 may cover the fourth part 540 of the back cover 600 or may face or face the fourth part 540. The front wall 640 may extend from the side wall 620 while flexing. The latching part 630 may extend from the front wall 640 to the inside of the back cover 600. [ The latching part 630 may be positioned between the third part 530 of the front cover 500 and the latching protrusion 560 and may be located adjacent to the bent part 570. The front wall 640 may face the space S2. The latching part 630 can face the space S2. The latching part 630 can be caught by the latching protrusion 560 of the front cover 500 so that the back cover 600 can be engaged with the front cover 500. [ The reflective sheet 126, the light guide plate 128, the optical sheet 125, and the like may be positioned in front of the frame 130. [ Can be coupled or mounted to the frame 130 at the front of the frame 130 of the guide panel 700. [ 26 may be an upper side, an upper side, a lower side, a lower side, a left side, a left side, a right side, or a right side of a display device.

27 to 29, the front frame 820 may be positioned behind the display panel 810. [ The reinforcing plate 830 may be located behind the front frame 820. [ The rear frame 840 may be positioned behind the reinforcing plate 830. The back cover 850 may be positioned behind the rear frame 840. [

The display panel 810 may be coupled to the front surface of the reinforcing plate 830. The rear frame 840 may be coupled to the rear surface of the reinforcing plate 830. The display panel 810 may be adhered and fixed to the reinforcing plate 830. The adhesive member 815 is fixed to the reinforcing plate 830 and a part of the rear surface of the display panel 810 can be adhered and fixed to the adhesive member 815. [

The front frame 820 may have a flat plate portion 820P, and a side frame SF. The flat plate portion 820P may face the display panel 810. [ The adhesive member 815 can be adhered to a part of the flat plate portion 820P. The display panel 810 can be bonded to the back surface of the adhesive member 815.

The front frame 820 can be produced by a roll forming process.

An air gap (AG) may be formed between the rear surface of the display panel 810 and the front surface of the flat plate portion 820P. Accordingly, heat generated in the display panel 110 can be transmitted to the flat plate portion 820P. The flat plate portion 820P absorbs heat transmitted from the display panel 810 and can evenly disperse the flat plate portion 820P into the entire flat plate portion 820P.

The reinforcing plate 830 may be bonded or attached to the rear surface of the flat plate portion 820P. The reinforcing plate 830 can reinforce the rigidity of the front frame 820. The reinforcing plate 830 can dissipate the heat transmitted from the front frame 820.

The rear frame 840 may be coupled to the rear surface of the reinforcing plate 830. The rear frame 840 can be bonded or attached to the back surface of the reinforcing plate 830 by an adhesive member. The rear frame 840 may include a flat plate portion 840P and side walls 840SW. The side wall 840SW may be formed at the edge or one side of the flat plate portion 840P. The flat plate portion 840P of the front frame 820 may be thinner than the flat plate portion 840P of the rear frame 840. [

For example, the flat portion 820P of the front frame 820 may be 0.6 millimeters, and the flat portion 840P of the rear frame 840 may be 0.8 millimeters. In another example, the front frame 820 may be 0.6 millimeters and the rear frame 840 may be 0.8 millimeters. As another example, the rear frame 840 may be 0.8 millimeters.

The front frame 820 and the rear frame 840 may be formed of the same material. For example, the front frame 820 and the rear frame 840 may be Al. Accordingly, it is possible to prevent a twisting phenomenon that may be caused by different thermal expansion coefficients in a high temperature or low temperature environment. The front frame 820 and the rear frame 840 may have different colors. Thus, the appearance of multi-tone can be realized. The multitone may be implemented by different colors and may be implemented by different surface finishes of the front frame 820 and the rear frame 840 so as to have different textures.

The front frame 820 may have a side frame SF, and the side frame SF may be formed at one side or edge of the flat plate portion 820P. The side frame SF can be curled. The side frames SF can cover the side surfaces of the display panel 810 and / or the side surfaces of the rear frame 840 while being curled at the edges of the flat plate portion 820P.

The side frame SF may include a first sidewall 820SW1, a second sidewall 820SW2, a third sidewall 820SW3, a first bending portion 820C1, and a second bending portion 820C2. Here, the bending portions 820C1 and 820C2 may be referred to as curled portions 820C1 and 820C2.

The first side wall 820SW1 may extend from the edge of the flat plate portion 820P. At this time, the first side wall 820SW1 may be formed while being bent toward the side of the display panel 810 in the flat plate portion 820P. The second sidewall 820SW2 may be positioned parallel to the first sidewall 820SW1. At this time, the second sidewall 820SW2 may be spaced a predetermined distance G1 from the first sidewall 820SW1. The second sidewall 820SW2 may be exposed to the outside. That is, the second sidewall 820SW2 can contact the outside air.

The first bending portion 820C1 may extend from the first side wall 820SW1 and be bent toward the second side wall 820SW2 and may be connected to one end of the second side wall 820SW2. The first bending portion 820C1 may be connected to the first side wall 820SW1 and / or the second side wall 820SW2 while forming a curved surface CS.

The third side wall 820SW3 may be adjacent to the side surface of the rear frame 840. [ The third side wall 820SW3 may be spaced apart from the side surface of the rear frame 840. [ The third side wall 820SW3 can form a gap with the side wall 840SW of the rear frame 840. [ The third sidewall 820SW3 may be located inside the second sidewall 820SW2. The third side wall 820SW3 may be positioned adjacent to the first side wall 820SW1 and / or the flat portion 820P of the front frame 820 at the same time.

The side wall 840SW of the rear frame 840 can be sandwiched between the third side wall 820SW3 and the adhesive member DT. The upper surface of the side wall 840SW of the rear frame 840 may abut against or be in contact with or facing the flat plate portion 820P or the first side wall 820SW1 of the front frame 820. [ The inner surface of the side wall 840SW of the rear frame 840 can be adjacent to or in contact with the adhesive member DT. The outer surface of the rear frame 840 may abut or abut against or face the one surface of the third side wall 820SW3 of the front frame 820. [

Accordingly, the rigidity of the display device 100 can be ensured and a slim structure can be realized. In addition, since the end face of the rear frame 840 is not exposed to the outside, it is possible to omit a separate finishing step of the fracture face, thereby reducing the number of processes and facilitating the assembly. In addition, it is possible to prevent a user from floating, erosion, gap widening, and the like which may occur due to exposure of the fracture surface to the outside.

The second bending portion 820C2 may connect the second side wall 820SW2 and the third side wall 820SW3. The second bending portion 820C2 may extend from the second side wall 820SW2 and be bent and connected to the third side wall 820SW3.

The first bending portion 820C1 and the second bending portion 820C2 may be exposed to the outside air together with the second side wall 820SW2. The outer side of the third side wall 820SW3 and the rear frame 840 or the side wall 840SW of the rear frame 840 forms a gap so that the outside air can flow into / out of the curled side frame SF . As a result, the first sidewall 820SW1, the second bending portion 820C1, the second sidewall 820SW2, the second bending portion 820C2, and the third sidewall 820SW3 can all be exposed to the outside air. Accordingly, the heat generated in the display panel 110 and absorbed by the flat plate portion 820P of the front frame 820 can be effectively dissipated through the side frame SF.

An electronic component for driving the display device can be coupled to the rear surface of the rear frame 840. The rear frame 840 may have a coupling portion for mounting electronic components. The rear frame 840 may comprise a beam. The beam can be formed integrally with the rear frame 840. The beam can be formed by pressing a part of the rear frame 840. The beam can be formed while a part of the rear frame 840 is depressed from the front surface and protruding from the rear surface. The beam may form a definite line and may form an infinite line. An infinite line can refer to a closed loop or a circuit. Thus, the bending or torsional rigidity of the rear frame 840 can be improved.

Referring to FIG. 31, the display panel 810 may be attached to the front surface of the reinforcing plate 830. The adhesive layer 816 may be formed on the front surface of the reinforcing plate 831. The rear frame 841 may be attached to the rear surface of the reinforcing plate 831. [ The front frame 821 may be attached to the front surface of the rear frame 841. The front frame 821 may include a vertical portion 821V and a horizontal portion 821H. The horizontal portion 821H may be attached to the front surface of the rear frame 841. [ The horizontal portion 821H may be spaced apart from the reinforcing plate 831. [ The vertical portion 821V may extend forward of the horizontal portion 820H. The vertical portion 821V may cover one side of the display panel 810. [

The front frame 821 can be produced by a roll forming process. The front frame 821 may have a very thin thickness due to the roll forming process. For example, the front frame 821 may have a thickness of 0.4 millimeters.

The rear frame 841 may include a transparent material. For example, the rear frame 841 may comprise a glass or plastic material. For example, the rear frame 841 may be a glass plate having a thickness of 3 millimeters.

It is to be understood that certain or any of the embodiments of the invention described above are not mutually exclusive or distinct from each other. Any or all of the embodiments of the invention described above may be combined or combined with each other in configuration or function.

The foregoing detailed description should not be construed in all aspects as limiting and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

Claims (10)

A display panel having a front surface for displaying an image and a rear surface facing the front surface;
A vertical portion extending to the rear of the display panel in the horizontal portion, a coupling portion projecting from the outer surface of the vertical portion, and a coupling portion formed adjacent to the coupling portion and formed in the vertical portion A guide panel having a first hole; And,
A first part that covers one side of the display panel, a second part that extends rearward of the display panel in the first part and that faces the vertical part, a second part that passes through the second part, Two holes, and a front cover adjacent to the second hole and having protrusions protruding from the inner surface of the second part,
Wherein the engaging portion is fitted in the second hole,
Wherein the projection is inserted into the first hole. The method according to claim 1,
The second part comprises:
And a stepped portion formed inside the front cover,
Wherein the second hole and the second projection are formed in a substantially rectangular shape,
And the display device is provided in the step portion. The method of claim 2,
The coupling portion
A third part protruding from an outer surface of the vertical part; And,
And a fourth part connected to the third part and facing the vertical part,
Wherein the third part is fitted in the second hole. The method of claim 3,
Along the longitudinal direction of the vertical portion,
And the length of the fourth part is longer than the length of the third part. The method of claim 3,
The thickness of the stepped portion may be,
And the height of the third part protrudes. The method of claim 3,
In the fourth part,
And an outer surface of the step portion. The method of claim 3,
The thickness of the fourth part,
And a step difference between the step and the second part. The method according to claim 1,
The display panel includes:
A first short side;
A second short side facing the first short side;
A first long side connecting the first short side and the second short side; And,
And a second long side which connects the first short side and the second short side and faces the first long side,
The front cover
A first body covering the first short side;
A second body connected to the first body and covering the first long side;
A third body connected to the second body and covering the second short side; And,
And a fourth body connected to the third body and covering the second long side,
Wherein the first body comprises:
Wherein the display panel covers a corner where the first short side of the display panel and the second long side meet,
And covers at least a part of the second long side of the display panel. The method according to claim 1,
And a back cover having a back plate located at a rear side of the front cover, a side wall bent forward of the back plate and covering the second part, and a locking part bent inward of the side wall,
The front cover
A hole penetrating the second part; And,
And a locking projection projecting outward from the front cover in the second part,
[0027]
And the second part is located between the first part and the engaging projection. The method of claim 9,
Preferably,
The first cover is bent outward from the front cover to form a space,
[0027]
And a space formed by the protrusions faces the display device.

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