WO2020153516A1

WO2020153516A1 - Display device

Info

Publication number: WO2020153516A1
Application number: PCT/KR2019/001022
Authority: WO
Inventors: 권해옥; 김준홍; 안병덕
Original assignee: 엘지전자 주식회사
Priority date: 2019-01-24
Filing date: 2019-01-24
Publication date: 2020-07-30
Also published as: KR20210090716A; KR102461660B1

Abstract

A display device is disclosed. A display device of the present invention comprises: a display panel; a frame which is positioned behind the display panel and to which the display panel is coupled; a bottom frame coupled to the bottom side of the frame; a plate positioned behind the frame and hinge-coupled to the bottom frame; and a coupler which is adjacent to the top side of the frame and positioned between the plate and the frame, and by which the plate is attached to or detached from the frame.

Description

Display device

The present invention relates to a display device. More specifically, it relates to a display device mounted on a vehicle such as an aircraft or a vehicle.

With the development of the information society, the demand for display devices is also increasing in various forms. In response, in recent years, LCD (Liquid Crystal Display Device), PDP (Plasma Display Panel), ELD (Electro luminescent Display), VFD (Vacuum Fluorescent) Display) and various display devices have been researched and used.

Among them, the liquid crystal panel of the 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 a backlight unit.

Recently, it is required to install a display device in various places, and research on such a structure has been actively conducted.

The present invention aims to solve the above and other problems. Another object may be to provide an installation structure of a display device that ensures safety.

Another object may be to provide an installation structure of a display device capable of tilting at various angles.

Another object may be to provide a display device having durability corresponding to an impact that may occur in a collision.

According to an aspect of the present invention to achieve the above or other object, a display panel; A frame positioned at the rear of the display panel to which the display panel is coupled; A bottom frame coupled to the lower side of the frame; A plate positioned at the rear of the frame and hinged to the bottom frame; In addition, a display device including a coupler positioned between the plate and the frame adjacent to an upper side of the frame and detaching and attaching the plate to the frame.

According to another aspect of the present invention, the coupler includes: a first coupling portion fixed to the rear side of the frame; A coupling frame fixed to the front surface of the plate; In addition, a second coupling part coupled to the coupling frame and engaging with the first coupling part may be included.

According to another aspect of the present invention, the second coupling part includes: a plurality of shafts fixed in parallel to the coupling frame in the vertical direction of the frame; A body moving in the vertical direction of the frame on the plurality of shafts; And, it may protrude from the body, and may include a clasp that is engaged with the first coupling portion according to the movement of the body.

Further, according to another aspect of the present invention, each of the plurality of shafts is installed, a plurality of elastic members that provide elastic force to the body; And, further comprising a lever rotatably coupled to the coupling frame, the lever is connected to the body, and the plurality of elastic members are compressed by rotating the clasp away from the first engaging portion by rotation Can be.

According to another aspect of the present invention, the first coupling part: includes a protrusion protruding from the first coupling part and extending in the left and right directions of the frame, wherein the coupling frame is: the protrusion It may include a slot extending through the coupling and passing through the coupling frame.

According to another aspect of the present invention, a stopper extending from the lower side of the plate toward the bottom frame and forming an obtuse angle with the rear surface of the plate; And, it is formed recessed in the rear of the bottom frame, it may include a receiving groove that can be inserted into the stopper.

According to another aspect of the present invention, the stopper may include a rib extending from the rear surface of the plate and the rear surface of the stopper, and extending from the rear surface of the plate to the rear surface of the stopper.

According to another aspect of the present invention, the supporter protruding from the rear surface of the frame toward the plate, having elasticity, and when the front surface of the plate faces the rear surface of the frame, contacts the rear surface of the plate. It may further include.

Further, according to another aspect of the present invention, one side is fixed to the bottom frame, and is bent and extended toward the rear surface of the plate from the one side, and further includes an elastic member having an elastic force, wherein the elastic member is, When the plate pivots with respect to the frame, the stopper may make contact with the rear surface of the plate prior to contacting the receiving groove.

Further, according to another aspect of the present invention, the plate may be formed with a plurality of holes.

According to another aspect of the present invention, a display panel; A frame positioned at the rear of the display panel to which the display panel is coupled; A backlight unit positioned between the display panel and the frame and providing light to the display panel; And, including a touch panel located in front of the display panel, the frame, the bottom forming the front of the frame; In addition, a first support portion forming a step from the bottom and extending toward the front of the frame; And, forming a step from the first support, including a second support extending toward the front of the frame, the display panel is fixed to the first support, the touch panel is fixed to the second support Can.

In addition, according to another aspect of the present invention, further comprising a first adhesive member fixed on the first support, the display panel may be fixed to the first adhesive member.

In addition, according to another aspect of the present invention, further comprising a second adhesive member fixed on the second support, the touch panel may be fixed to the second adhesive member.

In addition, according to another aspect of the present invention, the side wall may further include a side wall that forms a step at the second support portion and extends forward of the frame, and the side wall may cover the side surface of the touch panel.

Further, according to another aspect of the present invention, the frame may further include a curved portion connecting the rear surface of the bottom and the outer surface of the sidewall.

According to another aspect of the present invention, the outer surface of the curved portion of the frame and the sidewall may be exposed to the outside, and at least a portion of the rear surface of the bottom of the frame may be exposed to the outside.

In addition, according to another aspect of the present invention, further comprising a front cover located in front of the touch panel, the front cover is formed of a light-transmitting material, and the sidewall can cover the side of the front cover. .

The effect 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, it is possible to provide an installation structure of a display device that ensures safety.

According to at least one of the embodiments of the present invention, it is possible to provide an installation structure of a display device capable of tilting at various angles.

According to at least one of the embodiments of the present invention, it is possible to provide a display device having durability corresponding to an impact that may occur during a collision.

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

1 is a view showing an example of the installation of the display device related to the present invention.

2 to 7 are views showing examples of a display device according to an embodiment of the present invention.

8 to 15 are views illustrating examples of a mount unit of a display device according to an embodiment of the present invention.

Hereinafter, exemplary embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar elements are assigned the same reference numbers regardless of the reference numerals, and overlapping descriptions thereof will be omitted. The suffixes "modules" and "parts" for components used in the following description are given or mixed only considering the ease of writing the specification, and do not have meanings or roles distinguished from each other in themselves. In addition, in the description of the embodiments disclosed herein, when it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed herein, detailed descriptions thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed in the specification is not limited by the accompanying drawings, and all modifications included in the spirit and technical scope of the present invention , It should be understood to include equivalents or substitutes.

Hereinafter, the liquid crystal panel (Liquid Crystal Display Device, LCD) will be described as an example for the display panel, but the display panel applicable to the present invention is not limited to the liquid crystal panel, and the plasma display panel (Plasma Display Panel, P), field emission display panel (FED), and organic display panel (Organic Light Emitting Diode, OLED) are also possible.

In addition, hereinafter, the display device (refer to FIG. 2) includes a first long side (LS1), a second long side (LS2) against the first long side (LS1), a first long side (LS1), and It may include a first short side (SS1) adjacent to the second long side LS2 and a second short side (SS2) opposed to the first short side SS1.

Here, the first short side area SS1 is referred to as a first side area, and the second short side area SS2 is referred to as a second side area opposed to the first side area. The long side 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) is adjacent to the first side region and the second side region, is located between the first side region and the second side region, and can be referred to as a fourth side region (Fourth side area) opposed to the third side region. .

In addition, although 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 for convenience of description, the first and second long sides LS1, The length of LS2) may be approximately equal to the lengths of the first and second short sides SS1 and SS2.

In addition, hereinafter, the first direction (First Direction, DR1) is a direction parallel to the long sides (Long Side, LS1, LS2) of the display panel 100, and the second direction (Second Direction, DR2) is the display panel 100 It may be in a direction parallel to the short sides (Short Side, SS1, SS2). 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 be collectively referred to as a horizontal direction. In addition, the third direction DR3 may be referred to as a vertical direction.

From another point of view, the side where the display device displays the image may be referred to as front or front. When the display device displays an image, the side that cannot observe the image may be referred to as a rear or rear side. When looking at the display from the front or the front, the first long side LS1 may be referred to as an upper side or an upper side. Similarly, the second long side LS2 may be referred to as a lower side or a lower side. Similarly, the first short side SS1 may be referred to as the left or left side, and the second short side SS2 may be referred to as the right or right side.

In addition, 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 the display device. Also, a point at which the first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2 meet each other may be referred to as a corner. For example, the point where the first long side LS1 and the first short side SS1 meet is the first corner C1, and the point where the first long side LS1 and the second short side SS2 meet is the second corner C2. ), the point where the second short side (SS2) and the second long side (LS2) meet the third corner (C3), and the point where the second long side (LS2) and the first short side (SS1) meet the fourth corner (C4) Can be

Here, the direction from the first short side SS1 toward 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 a left-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 referred to as a vertical direction UD.

Referring to FIG. 1, the display device 100 may be mounted on an aircraft. In order to provide various contents to passengers, the display device 100 may be installed or mounted on the back of the aircraft seat ST.

In an emergency situation that may occur during the operation of the aircraft, the passenger may collide with the rear of the aircraft seat (ST). Accordingly, the display device 100 installed in the aircraft may be required to have a certain level of durability against collision.

2 and 3, the display panel 110 is provided on the front surface of the display device 100 and an image may be displayed. The display panel 110 divides an image into a plurality of pixels and outputs an image by matching color, brightness, and saturation per pixel. 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 composed of red (R), green (G), and blue (B) subpixels. The front substrate may generate an image corresponding to a red, green, or blue color according to a control signal.

The back substrate can include switching elements. The rear substrate can switch the pixel electrode. For example, the pixel electrode may change the molecular arrangement of the liquid crystal layer according to a control signal applied from the outside. The liquid crystal layer may include a plurality of liquid crystal molecules. The liquid crystal molecules may change an arrangement in correspondence to a voltage difference generated between the pixel electrode and the common electrode. The liquid crystal layer may transmit light provided from the rear of the display panel 110 to the front substrate.

The backlight unit 120 may be located behind the display panel 110. The backlight unit 120 may include a plurality of light sources. The light source of the backlight unit 120 may be arranged in a direct type or an edge type. In the case of the direct type backlight unit 120, a diffusion plate may be further included.

The backlight unit 120 may be coupled to the front and side of the frame 130. For example, it means that a plurality of light sources may be disposed inside one side of the frame 130, and in this case, it may be collectively referred to as an edge type backlight unit.

The backlight unit 120 may be driven by a full driving method or a partial driving method such as local dimming or impulsive. The backlight unit 120 may include an optical sheet and an optical layer.

The optical sheet may allow light from the light source to be evenly transmitted to the display panel 110. The optical sheet may be composed of a plurality of layers. For example, it may include at least one prism sheet and/or at least one diffusion sheet. The optical layer may include a light source or the like.

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

The touch panel 140 may be located in front of the display panel 110. The touch panel 110 includes a capacitive touch panel, a resistive touch panel, an infrared-infrared touch panel, an acoustic touch panel, and a pressure touch panel. ). The touch panel 140 may detect input information acquired by a user through a finger.

The front cover 150 may be located on the front side of the touch panel 140. The front cover 150 may be made of, for example, a transparent material and prevent damage to the touch panel 140.

The frame 130 may include a bottom 131, a first support 132, a second support 133, and a side wall 135. The bottom 131 may be a flat plate forming the rear surface of the frame 130. The first support part 132 may extend from the bottom 131 to form a step toward the front of the display device 100. The second support 133 may extend from the first support 132 to form a step in front of the display device 100. The sidewall 135 may extend from the second support 133 to the front of the display device 100.

The display panel 110 may be placed on the first support 132. The display panel 110 may be fixed to the first support 132 by the first adhesive member 160. For example, the first adhesive member 160 may be a double-sided tape. The touch panel 140 may be placed on the second support 133. The touch panel 140 may be fixed to the second support part 133 by the second adhesive member 170. For example, the second adhesive member 170 may be glue.

3 and 4, the frame 130 may include a bottom 131, a curved portion 131R, and a side wall 135. The curved portion 131R may be formed between the bottom 131 and the sidewall 135. The sidewall 135 may extend from the second support 133 of the frame 130 toward the front of the frame 130. The sidewall 135 may cover the side of the touch panel 140 and/or the side of the front cover 150. The edge of the frame 130 may be rounded by the curved portion 131R. Accordingly, a user's finger or the like can be easily inserted between the display device 100 embedded in the rear of the aircraft seat or the like to tilt the display device 100.

At this time, the outer surface of the curved portion 131R and the sidewall 135 of the frame 130 may be exposed to the outside, and at least a portion of the rear surface of the bottom 131 of the frame 130 may be exposed to the outside. A main board, a T-CON board, etc. may be mounted on the rear of the bottom 131 of the frame 130 that is not exposed to the outside. The back cover 1 may cover a main board or the like.

2 and 4, the docking module 200 may be mounted on the lower side of the frame 130. The docking module 200 may include an input unit IN, an output unit OUT, and/or a remote receiving unit OR. The docking module 200 may be referred to as a bottom frame 200.

5 and 6, an opening 137 may be formed in the bottom 131 of the frame 130, and the PCB 10 or the FPCB 10 or the cable 10 may open the frame 130. 137) can be exposed to the outside. The PCB 10 may be electrically connected to the display panel 110 (see FIG. 3 ), and may be exposed to the outside of the frame 130 through the opening 137. One end of the PCB 10 may be inserted into the connector 138. The connector accommodating portion 136 may be formed by being recessed at the rear surface of the frame 130. The opening 137 may be in communication with the connector receiving portion 136.

Referring to FIG. 7, the docking module 200 may be electrically connected to the connector 138.

6 and 7, the frame 130 may include a groove 130H. The groove 130H may be formed while being recessed from the rear side of the frame 130. The groove 130H may be positioned adjacent to the lower side of the frame 130. The groove 130H may be formed on the left side and one on the right side adjacent to the lower side of the frame 130.

The docking module 200 may include a holder 210. The holder 210 may extend from the docking module 200 toward the frame 130. The holder 210 may include a first finger 212 and a second finger 214. The first finger 212 may be located on the front side of the frame 130, and the second finger 214 may be located on the back side of the frame 130. The second finger 214 may be inserted into the groove 130H formed on the rear surface of the frame 130. The frame 130 may be inserted into the holder 210 and fixed by the first finger 212 and the second finger 214.

8 and 9, the coupler 300 may include a first coupling part 310 and a second coupling part 320. The first coupling part 310 may be fixed to the rear side of the frame 130 by the coupling member f adjacent to the upper side of the frame 130. The first coupling part 310 may be provided with a locking groove 314 in a long elongated plate shape. The second coupling part 320 may be inserted into the locking groove 314 while moving in a direction parallel to the rear surface of the frame 130.

The second coupling part 320 may include a body 322 and a clasp 324. The body 322 may move in the vertical direction of the frame 130 from the rear side of the frame 130. The body 322 may be located above the first coupling portion 310. The clasp 324 may extend from one side of the body 322 and may be located between the body 322 and the first coupling portion 310. The shafts S1 and S2 extend long in the vertical direction of the frame 130 and may have a plurality. The first shaft S1 may be located on one side of the body 322, and the second shaft S2 may be located on the other side of the body 322. The body 322 can move in the vertical direction of the frame 130 in the shaft (S1, S2). The elastic members SP1 and SP2 may be inserted into the shafts S1 and S2 to provide elastic force to the body 322.

The coupling frame 340 may cover the first coupling portion 310 and the second coupling portion 320 and may be located on the rear surface of the frame 130. The second coupling part 320 may be installed or mounted on the coupling frame 340. A plurality of shafts (S1, S2) may be installed on the coupling frame 340, the body 322 of the second coupling portion 320 along the shaft (S1, S2) with respect to the coupling frame 340 You can move up and down.

The lever 330 may be pivotally connected to the coupling frame 340 (330P). For example, the lever 330 may have a shape. The lever 330 may move the body 322 by rotation.

The coupling frame 340 may have a slot 342 formed to be extended, and the first coupling portion 310 may include a projection 312 or a barrier 312 inserted into the slot 342. . Accordingly, the first coupling part 310 and the second coupling part 320 may be aligned.

10 to 12, the plate 500 may be located behind the frame 130 and may be pivotally connected to the frame 130 or the docking module 200. For example, the docking module 200 may include

hinges

410 and 420. A plurality of

hinges

410 and 420 may be provided, and the plurality of

hinges

410 and 420 may be located on both sides of the docking module 200. Plate 500 may be coupled to

hinges

410 and 420. The plate 500 may include a plurality of holes 500h. The plurality of holes 500h has a constant distribution in the area of the plate 500 and may be formed in the plate 500. Accordingly, weight reduction of the plate 500 can be achieved, and the heat dissipation effect of the display device can be improved.

The plate 500 may include ribs 500L. The ribs 500L may be formed by pressing a plate. The coupling frame 340 may be fixed to the front surface of the plate 500. For example, the coupling frame 340 may be fixed to the front side of the plate 500 by a screw S on the front side of the plate 500. In a state in which the second coupling portion 320 is constrained to the first coupling portion 310, as shown in FIG. 12, the frame 130 and the plate 500 may face each other at regular intervals.

4 and 12, the frame 130 may include

supporters

136 and 137. The

supporters

136 and 137 may be formed on the rear surface of the frame 130. The

supporters

136 and 137 may have elasticity. For example, the

supporters

136 and 137 may be plate springs. As shown in FIG. 12, in a state where the plate 500 faces the rear surface of the frame 130, the

supporters

136 and 137 may contact the front surface of the plate 500. At this time, the

supporters

136 and 137 may be in a state of providing elastic force to the plate 500. That is, the

supporters

136 and 137 may provide a buffer force to the frame 130 in the process where the frame 130 is constrained or tilted in the plate 500.

11 and 13, the plate 500 may include a stopper 520. The stopper 520 is located adjacent to the lower side of the plate 500 and may extend outward from the plate 500. The stopper 520 may protrude from the plate 500 toward the docking module 200 and extend. The stopper 520 may be a flat plate 522 and bend while maintaining a constant angle with respect to the plate 500. For example, the rear surface of the plate 500 and the rear surface 522 of the stopper 520 may form an obtuse angle.

One side of the stopper 520 may be hammered 524. Ribs 526 may be formed on the back surface of the plate 500 and the back surface of the stopper 520. The rib 526 protrudes from the rear surface of the plate 500 and the rear surface of the stopper 520, and may extend from the plate 500 to the stopper 520. Docking module 200 may be provided with a stopper receiving portion (200H) on the back. The stopper accommodating part 200H is recessed inside the docking module 200 and may have a shape corresponding to the stopper 520. The stopper receiving portion 200H may be referred to as a receiving groove 200H.

Accordingly, when the plate 500 performs a tilting motion with respect to the frame 130, the range of motion can be limited, and rigidity can be provided to the plate 500 and the stopper 520.

14 and 15, the elastic member 540 is fixed to the docking module 200 to provide elastic force to the rear surface of the plate 500. For example, the elastic member 540 may be a plate spring. The elastic member 540 may include a first part 541 having a circular cross section, and a second part 542 having a flat plate shape. The first part 541 may be fixed to the docking module 200. The second part 542 may extend from the first part 541 to face the rear surface of the plate 500. Accordingly, when the plate 500 is tilted with respect to the frame 130, the elastic member 540 may provide a buffer force to the plate 500. For example, when the plate 500 is tilted, the elastic member 540 may contact the rear surface of the plate 500 before the stopper 520 contacts the stopper receiving portion 200H.

The aforementioned plate 500, coupler 300, and related components may be referred to as a mount unit.

Certain embodiments or other embodiments of the invention described above are not mutually exclusive or distinct. Any of the embodiments or other embodiments of the present invention described above may be combined or combined with each configuration or function.

The above detailed description should not be construed as limiting in all respects, but should be considered illustrative. The scope of the invention should be determined by rational interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention.

Claims

Display panel;

A frame positioned at the rear of the display panel to which the display panel is coupled;

A backlight unit positioned between the display panel and the frame and providing light to the display panel; And,

It includes a touch panel located in front of the display panel,

The frame,

A bottom forming the front surface of the frame; And,

A first support portion forming a step from the bottom and extending toward the front side of the frame; And,

Forming a step from the first support, and including a second support extending toward the front of the frame,

The display panel is fixed to the first support,

The touch panel is a display device fixed to the second support.
According to claim 1,

Further comprising a first adhesive member fixed on the first support,

The display panel is a display device fixed to the first adhesive member.
According to claim 1,

Further comprising a second adhesive member fixed on the second support,

The touch panel is a display device fixed to the second adhesive member.
According to claim 1,

Further comprising a side wall that forms a step in the second support portion and extends forward of the frame,

The side wall is a display device that covers the side of the touch panel.
The method of claim 4,

The frame further comprises a curved surface portion connecting the rear surface of the bottom and the outer surface of the sidewall.
The method of claim 5,

The outer surface of the curved surface portion and the side wall of the frame is exposed to the outside,

A display device in which at least a portion of a rear surface of the bottom of the frame is exposed to the outside.
The method of claim 4,

Further comprising a front cover located in front of the touch panel,

The front cover is formed of a light-transmitting material,

The sidewall is a display device that covers the side of the front cover.
Display panel;

A frame positioned at the rear of the display panel to which the display panel is coupled;

A bottom frame coupled to the lower side of the frame;

A plate positioned at the rear of the frame and hinged to the bottom frame; And,

A display device including a coupler adjacent to the upper side of the frame and positioned between the plate and the frame, and detaching and attaching the plate to the frame.
The method of claim 8,

The coupler is:

A first coupling part fixed to the rear surface of the frame;

A coupling frame fixed to the front surface of the plate; And,

A display device coupled to the coupling frame and including a second engaging portion engaged with the first engaging portion.
The method of claim 9,

The second coupling portion:

A plurality of shafts fixed parallel to the coupling frame in the vertical direction of the frame;

A body moving in the vertical direction of the frame on the plurality of shafts; And,

A display device including a clasp protruding from the body and engaging the first coupling portion according to the movement of the body.
The method of claim 10,

A plurality of elastic members, each of which is installed on the plurality of shafts and providing elastic force to the body; And,

Further comprising a lever rotatably coupled to the coupling frame,

The lever,

A display device which is connected to the body, and the plurality of elastic members are compressed by moving the clasp away from the first coupling portion by rotation.
The method of claim 11,

The first coupling portion:

Protruding from the first coupling portion, and includes a projection extending in the left and right direction of the frame,

The coupling frame is:

A display device including a slot extending through the coupling frame so that the protrusion is inserted.
The method of claim 8,

A stopper extending from the lower side of the plate toward the bottom frame and forming an obtuse angle with the rear surface of the plate; And,

A display device that is formed by being recessed at the rear surface of the bottom frame, and includes a receiving groove into which the stopper can be inserted.
The method of claim 13,

The stopper is a display device including a rib protruding from the rear surface of the plate and the rear surface of the stopper and extending from the rear surface of the plate to the rear surface of the stopper.
The method of claim 8,

Projecting toward the plate from the rear of the frame, having an elastic force,

And a supporter contacting the rear surface of the plate when the front surface of the plate faces the rear surface of the frame.
The method of claim 13,

One side is fixed to the bottom frame, the one side is bent toward the back of the plate and extended, and further includes an elastic member having an elastic force,

The elastic member,

When the plate pivots with respect to the frame, the display device contacts the rear surface of the plate before the stopper contacts the receiving groove.
The method of claim 8,

The plate is a display device having a plurality of holes.