KR20230027351A - Back cover assembly having rigid reinforcing structure and display device including the same - Google Patents

Abstract

The present invention relates to a back cover for a display device equipped with a rigid reinforcing structure and deleting an inner plate, wherein the back cover assembly of the present embodiment is configured with: a first plate that couples a display panel to the front; a second plate having a larger diameter than that of the first plate, and having an edge end part bent toward the front to form an edge part and a bezel part; and a reinforcing plate interposed between the first plate and the second plate to bond them. Therefore, the present invention is capable of having an effect of deleting the inner plate.

Description

Back cover assembly having rigid reinforcing structure and display device including the same}

The present invention relates to a display device, and more particularly, to a back cover for a display device having a rigid reinforcing structure and removing an inner plate.

In general, a display device is a device that receives and displays an image signal, and includes a TV or a monitor. As a means for displaying an image, an organic light emitting display (OLED) or a liquid crystal display (LCD) is used. Various devices such as Crystal Display Device) and Plasma Display Panel (PDP) are being used.

Recently, as the information society develops, demands for display devices are also increasing in various forms, and are gradually becoming lighter, larger, and slimmer. In particular, in the case of a display device applied to a TV, as the demand for a large display device increases, demand for lightening, slimming, and aesthetics of the TV structure along with high quality and high definition of picture quality is also increasing.

OLED, which has recently been in the limelight as a display device, has advantages such as fast response speed, luminous efficiency, luminance, and viewing angle, etc., by using an organic light emitting diode that emits light itself. As described above, since OLEDs use self-light emitting elements and do not require a backlight unlike liquid crystal display devices using non-light emitting elements, they are advantageous in reducing weight and thickness.

The OLED includes a back cover as a support structure for supporting the organic light emitting display panel from the rear. Since the back cover must stably protect and support the display panel, a certain level of rigidity must be secured, and at the same time, since it forms the appearance of the display device, processing for decoration must be easy.

Figure 1 is an exploded perspective view showing a display device according to the prior art, the display panel 10 is coupled to the front surface of the back cover 20 via an adhesive member 11 such as double-sided tape or double-sided adhesive foam pad , An inner plate 30 for reinforcing the rigidity of the back cover 20 is interposed between the back cover 20 and the display panel 10 .

The back cover 20 is a rectangular plate, and a User Defined Mount (UDM) region 21 is formed in one region for coupling parts such as a power module and a control module. The UDM region 21 is integrally formed with the back cover 20 by applying a process such as compression to one side of the back cover 20 on a plate.

In the back cover having such a UDM region, it is difficult to manage the flatness of the plate according to the formation of the UDM, and the resistance to bending deformation is lowered. That is, the back cover has a problem in that the upper/left/right regions are easily bent by UDM forming.

In the display device to solve this problem, the inner plate 30 is additionally coupled to the front surface of the back cover 20 . The inner plate 30 is composed of a rigid plate of a metal material having high strength, and is composed of a material that is relatively heavy and thick compared to the back cover.

Therefore, since the display device according to the prior art is necessarily coupled with an expensive inner plate, the manufacturing cost increases, the manufacturing process and structure become complicated, and there are disadvantages in lightening and slimming due to the weight and thickness of the inner plate.

Meanwhile, since the UDM area in the display device has a different specific shape and structure depending on the model of the display device, the entire back cover including the UDM area must be changed when the model of the display device is changed.

Therefore, the conventional back cover has limitations applied only to a display device of a specific model, and since a separate mold device must be manufactured to be applied to a display device of another model, the manufacturing cost is greatly increased.

The present invention has been proposed to solve the above problems, and the UDM plate is configured to reinforce the rigidity of the back cover, and the object is to provide a back cover assembly capable of improving the rigidity of the back cover even when the inner plate is removed. do it with

In addition, the present invention is to provide a back cover assembly that can be applied to display devices of various models by changing only the UDM plate when the model of the display device is changed, since the UDM plate is manufactured separately from the back cover and coupled to the back cover. do it with

Another object of the present invention is to provide a back cover assembly having excellent rigidity even when the inner plate is removed by including a back cover composed of a pair of plates and having a concavo-convex reinforcing structure therein.

Another object of the present invention is to provide a back cover assembly that does not require a separate bezel because the back cover is configured to close the rim of the display device.

The back cover assembly of the present embodiment for solving the above problems has a first plate for coupling a display panel to the front, a larger diameter than the first plate, and an edge end is bent toward the front to form an edge portion and a bezel portion. It consists of a second plate, and a reinforcing plate interposed between the first plate and the second plate to bond them.

In addition, the first plate may be composed of an aluminum plate, and the second plate may be composed of an EGI or Al plate.

In addition, the reinforcing plate may form a corrugate structure having a corrugated, corrugated, or concave-convex shape.

In addition, the UDM plate may further include a UDM plate coupled to a rear surface of the second plate in which a module accommodating space for accommodating a module driving a display panel is formed.

And the display device of the present embodiment for solving the above problems is formed with a display panel, a back cover for coupling and supporting the display panel on the front side, and a module accommodating space in which a module driving the display panel is accommodated. A UDM plate coupled to the rear surface of the back cover, wherein the back cover has a first plate coupled to the display panel on the front surface, and has a larger diameter than the first plate, and an edge end is bent toward the front to form a border portion. and a second plate forming a bezel part, and a reinforcing plate interposed between the first plate and the second plate to bond them while forming a corrugate structure.

In the present invention, since the reinforcing plate and the UDM plate reinforce the rigidity of the back cover, there is an effect of removing the inner plate.

In addition, in the present invention, since the UDM plate is separately molded and coupled to the back cover, only the UDM plate can be changed when the model of the display device is changed, so that the back cover can be universally applied.

In addition, since the plate constituting the back cover forms the rim portion and the bezel portion of the display device in the present invention, there is an effect that separate decorative frames for the rim portion and the bezel portion are not required.

1 is an exploded perspective view showing a display device according to the prior art;
2 is an exploded perspective view showing a display device according to the present embodiment;
3 is a cross-sectional view showing an assembly structure of the display device of FIG. 2;

The technical problems achieved by the present invention and its practice will be clarified by the preferred embodiments described below. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It should be understood that the differences in the present embodiment, which will be described later, are not mutually exclusive. That is, without departing from the spirit and scope of the present invention, specific shapes, structures, and characteristics described may be implemented in relation to one embodiment in another embodiment, and the location of individual components within each disclosed embodiment. Alternatively, it should be understood that the arrangement may be changed, and similar reference numerals in the drawings indicate the same or similar functions across several aspects, and the shape, such as length, area and thickness, may be exaggerated for convenience. In the description of the present embodiment, expressions such as up, down, before, after, first, second, etc. indicate relative positions or orders, and their technical meanings are not limited to dictionary meanings.

2 is an exploded perspective view of the display device according to the present embodiment, and FIG. 3 is a cross-sectional view showing an assembly structure of the display device of FIG. 2 .

First, referring to FIG. 2 , the display device of this embodiment includes a display panel 100 and a back cover 200 that accommodates and supports the display panel 100 at the rear of the display panel 100. and a UDM plate 300 coupled to the back surface of the back cover 200. In the above configuration of the display device, the display panel 100 and the back cover 200 may be coupled to each other via a panel adhesive member 110 such as a double-sided tape or a double-sided adhesive foam pad.

The display panel 100 is a core component of a display device and is an image display device that displays an image from an external signal, and may be composed of, for example, an organic light emitting panel. The organic light emitting panel is advantageous for slimming and curving, and exhibits a fast response speed.

In addition, the display panel 100 may be composed of various types of image display elements such as liquid crystal panels and plasma panels in addition to organic light emitting panels. When the display panel 100 is composed of a liquid crystal panel, a backlight unit providing a surface light source may be further coupled to the rear surface of the liquid crystal panel.

The back cover 200 supports the display panel 100 coupled to the front and functions as a rear case of the display device. The back cover 200 has a square plate shape corresponding to the shape of the display device, and may have a predetermined curvature when applied to a curved display device.

The back cover 200 is made of a composite material having a reinforcing structure inside a pair of plates. For example, as shown in FIG. 3 , the back cover 200 includes an inner first plate 210, an outer second plate 220, and a reinforcing plate interposed between the first and second plates 210 and 220. (230). Each plate constituting the back cover 200 is made of a material that is light and has sufficient rigidity. For example, the first plate 210 may be made of aluminum or an aluminum composite material, and the second plate 220 is Electrolytic Galvanized Iron (EGI) may be made of aluminum (Al) material.

The first plate 210 accommodates and couples the display panel 100 on its inner surface, and the second plate 220 functions as a rear cover of the display device. To this end, the second plate 220 is composed of a plate having a larger diameter than the first plate 210, and an edge area larger than the first plate 210 is bent toward the front.

The second plate 220 forms a rear portion coupled to the first plate 210 via the reinforcing plate 230 in the center area, and the edge portion 221 of the display device is bent while the end portion of the edge area is bent toward the front. While forming, the end of the edge portion 221 is bent inward or outward again to form the bezel portion 222 . The edge portion 221 and the bezel portion 222 of the second plate 220 may be formed by press processing on the edge area of the flat plate, and the bezel portion 222 may face inward or outward.

The reinforcing plate 230 is interposed between the first plate 210 and the second plate 220 to reinforce the rigidity of the back cover 200 . For this purpose, the reinforcing plate 230 may have a corrugated, wrinkled, or concave-convex structure (hereinafter, referred to as a corrugate structure), and as long as the structure can reinforce the rigidity of the back cover 200, it is not limited to a specific structure and various structures. can be achieved The reinforcing plate 230 may be adhered to the first and second plates 210 and 220 through an adhesive member mainly made of epoxy or urethane.

As described above, the back cover 200 of the present embodiment is composed of a composite material having a corrugate structure and exhibits excellent rigidity to remove the inner plate, and at the same time, the second plate 220 is formed larger than the first plate 210 to rim By providing the part 221 and the bezel part 222, there is an advantage in that a separate mechanism for forming the bezel is not required like a middle frame.

The UDM plate 300 is coupled to the rear surface of the back cover 200 to fix parts (not shown) for driving the display panel 100 and reinforces the rigidity of the back cover 200 . The UDM plate 300 for this may be made of an aluminum steel plate, a zinc steel plate, a galvalume steel plate, or the like, and may have a thickness of 0.5 mm to 1.2 mm. The UDM plate 300 may be coupled to the back cover 200 by a press, clinching, half blanking, Tox, screw process, etc. If it can be made, it can be applied as an adhesive member using a double-sided tape without being limited to a specific method.

In addition, the UDM plate 300 provides a module accommodating space 310 in a concave shape on the inner surface to accommodate various control modules or components such as a TC module, a power module, a graphic module, etc., and the module accommodating space 310 The plate-shaped UDM plate 300 is formed by forming through a process such as compression. The module accommodating space 310 may be divided into multiple areas according to the number or type of required parts. In addition, the UDM plate 300 may have an L or ∩-shaped bending structure on the outer edge, and the bending structure improves the rigidity of the UDM plate.

The shape and structure of the UDM plate 300 may be specified according to the model of the display device. That is, when the model of the display device of the same inch is changed, a specific model of the UDM plate 300 corresponding to the model of the corresponding display device is selected and coupled to the back cover 200 . Therefore, since the back cover can be used as it is even when a new model of the same inch is manufactured in the display device of this embodiment, there is an effect of reducing mold cost. Meanwhile, although not shown, a reinforcing frame may be further coupled to the rear surface of the UDM plate.

<Experiment 1> Evaluation of dead weight/load deflection

Hereinafter, the self-weight/load deflection amount for the back cover (Example) of this embodiment in which the inner plate is deleted, made of a composite material having a corrugate structure, and the conventional back cover (Comparative Example) in which the UDM area is integrally formed while the inner plate is combined. , examine the amount of plastic deformation through experiments.

In this experiment, support blocks were installed at the four corners of the back cover and the back cover was placed on it. It was measured by applying, and the unit of displacement is mm.

item comparative example Example award left right award left right Vertical warp measurand -2.0 -10. -1.5 1.5 1.0 2.0 dead weight deflection -22.0 -8.5 -9.0 -15.5 -9.0 -8.0 Deflection at 5 kg load -33.5 -12.5 -13.5 -21.5 -9.0 -8.0 deflection after load removal -27.0 -10.0 -10.5 -14.5 -7.0 -6.0 Vertical deflection measurements after unloading -5.0 -1.0 -1.5 0.0 1.0 2.0 amount of deformation -3.0 0.0 0.0 -1.5 0.0 0.0

As can be seen from Table 1 above, the back cover of this embodiment has relatively excellent characteristics compared to the conventional back cover in terms of dead weight deflection, load deflection, vertical bending deflection after load removal, and deformation. It can be seen that.

Although exemplary embodiments of the present invention have been shown and described as described above, various modifications and other embodiments may be made by those skilled in the art. All of these modifications and other embodiments are to be considered and included in the appended claims without departing from the true spirit and scope of the present invention.

100: display panel
200: back cover
210: first plate 220: second plate
230: reinforcement plate
221: rim part 222: bezel part
300: UDM plate
310: module accommodation space

Claims (5)

A first plate for coupling the display panel to the front;
a second plate having a diameter greater than that of the first plate, and having an edge end thereof bent toward the front to form an edge portion and a bezel portion; and
A back cover assembly for a display device comprising a reinforcing plate interposed between the first plate and the second plate to bond them. According to claim 1,
The back cover assembly for a display device, wherein the first plate is composed of an aluminum plate and the second plate is composed of an EGI or Al plate. The method of claim 1, wherein the reinforcing plate,
A back cover assembly for a display device that has a corrugate structure in the form of wrinkles, waves, or irregularities. According to claim 1,
A back cover assembly for a display device further comprising a UDM plate in which a module accommodating space for accommodating a module driving a display panel is formed and coupled to the rear surface of the second plate. display panel;
a back cover coupled to and supporting the display panel on the front side; and
A UDM plate in which a module accommodating space for accommodating a module driving the display panel is formed and coupled to the rear surface of the back cover;
The back cover,
A first plate coupled to the display panel on the front side;
a second plate having a diameter greater than that of the first plate, and having an edge end thereof bent toward the front to form an edge portion and a bezel portion; and
A display device comprising a reinforcing plate interposed between the first plate and the second plate to bond them while forming a corrugate structure.

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