KR20220014378A - Display apparatus and assembling method of that - Google Patents

Abstract

The present invention relates to a display device and an assembling method thereof. The display device of an embodiment of the present invention comprises: a display panel; a back cover which consists of a complex structure including a core layer and a skin layer formed on both surfaces of the core layer and is disposed on a rear surface of the display panel to support the display panel; and a middle cabinet which consists of an external part with a frame shape and a coupling part extended inside the external part and is coupled to the back cover to decorate a boundary part while the coupling part is inserted into the core layer.

Description

Display apparatus and assembling method thereof

The present invention discloses a display device and a method for assembling the same.

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 device (OLED: Organic Light Emitting Display), a liquid crystal display device (LCD: Liquid Crystal) Various devices such as display device) and plasma display device (PDP: Plasma Display Panel) are being used.

In recent years, as the information society develops, the demand for display devices is also increasing in various forms, and is 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-sized display device increases, the demand for weight reduction, slimness, and aesthetics of the TV structure along with high quality and high definition of picture quality are also increasing.

1 is a cross-sectional view showing the main configuration of a display device according to the prior art.

In the conventional display device, a display panel (11) is disposed on the front side, a back cover (12, a back cover) is disposed to support the display panel (11) on the back side, and a middle cabinet (13) along the edges thereof , Middle Cabinet) is intervened to combine the display panel 11 and the back cover 12 . To this end, the middle cabinet 13 provides a horizontal coupling portion 14 protruding inward, such as a 'T' shape or an 'L' shape as shown. The display panel 11 and the back cover 12 are bonded to the middle cabinet 13 on the front and rear surfaces of the horizontal coupling unit 14 using an adhesive member such as a double-sided tape 15 .

In the assembly of the display panel 11 and the back cover 12 using the double-sided tape 15 as described above, the double-sided tape 15 is previously adhered to both sides of the horizontal coupling part 14 along the four edges of the middle cabinet 13 . shall. The horizontal coupling portion 14 of the middle cabinet 13 has a width of several mm, and since the tape must be attached to both sides of the horizontal coupling portion having a very narrow width, the double-sided tape attachment process is very difficult, resulting in reduced work efficiency. There is this.

In addition, in the conventional display device, defects such as lifting or even dropping after attachment are frequently generated due to the quality of the double-sided tape 15 itself. In order to prevent this, the operation of applying a primer before attaching the double-sided tape 15 should be preceded. In addition, in order to improve adhesion between the middle cabinet 13 and the display panel 11 or the back cover 12 , the double-sided tape 15 is pressed with a roller or the like, or the back cover 12 and the middle cabinet 13 are separated. After bonding, a process of pressing them is applied. As such, as the primer application process, the double-sided tape pressing process, and the back cover pressing process are essentially performed, the assembly process is complicated and the assembly time is increased.

In addition, in the conventional display device, since the horizontal coupling part 14 of the middle cabinet 13 is interposed between the display panel 11 and the back cover 12, the horizontal coupling part 14 contributes to the overall thickness of the display device. This indicates a limit to the slimming of the display device.

The present invention has been proposed to solve the above problems, and an object of the present invention is to provide a display device capable of improving coupling force between a back cover and a middle cabinet, and simplifying a manufacturing process, and an assembly method thereof.

Another object of the present invention is to provide a display device advantageous for slimming the display device and a method for assembling the same.

The display device of this embodiment for solving the above problems has a composite structure including a display panel, a core layer and a skin layer formed on both sides of the core layer, and is disposed on the rear surface of the display panel to protect the display panel and a middle cabinet configured to support a back cover, and a frame-shaped outer edge portion and a coupling portion extending inside the outer edge portion, and coupled to the back cover while the coupling portion is inserted into the core layer to decorate the rim portion.

In the display device of this embodiment, the core layer may include a resin layer, and the skin layer may include a metal layer.

In addition, in the display device of this embodiment, the middle cabinet has a fixing protrusion protruding from the outer circumferential surface of the coupling part, and the skin layer is engaged with the fixing protrusion by pressing, so that the assembly of the middle cabinet and the back cover is easy. can be fixed.

And the display device assembly method of this embodiment for solving the above problems, (a) preparing a back cover of a composite structure in which skin layers are formed on both sides of the core layer, (b) inside the outer edge of the frame shape Preparing a middle cabinet in which a coupling part extends, (c) coupling the middle cabinet along a side surface of the back cover so that the coupling part is inserted into the core layer, and (d) bonding a display panel to the front surface of the back cover including;

In the method of assembling the display device of the present embodiment, the preparation of the back cover in step (a) may include processing the core layer in the edge region to form a recess groove into which the coupling part is inserted.

In addition, in the display device assembling method of the present embodiment, the preparation of the middle cabinet in step (b) may include forming a fixing protrusion protruding from the outer peripheral surface of the coupling part.

In addition, in the method for assembling the display device of this embodiment, the coupling of the back cover and the middle cabinet in step (c) includes inserting the coupling part into the core layer and then pressing the skin layer to fix the coupling. can do.

In the display device of the present embodiment, since the double-sided tape adhesion process and the primer application process are not applied, the assembly process may be simplified and assembly efficiency may be improved.

In addition, the display device of the present embodiment can improve the coupling force between the middle cabinet and the back cover and improve the durability of the coupling.

In addition, in the display device of the present embodiment, since the middle cabinet does not participate in the thickness of the display device, there is an advantageous effect in slimming the display device.

1 is a cross-sectional view showing a coupling structure of a display device according to the prior art;
2 is a cross-sectional view showing a coupling structure of the display device according to the present embodiment;
3A to 3C are process diagrams illustrating an assembly process of the display device according to the present embodiment;
4 is a plan view illustrating an assembly process of the middle cabinet and the back cover of FIG. 3b;

The present invention and the technical problems achieved by the practice of the present invention will be made clear 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 between the embodiments described below are not mutually exclusive. That is, without departing from the spirit and scope of the present invention, the specific shapes, structures and characteristics described may be implemented in other embodiments with respect to one 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 refer to the same or similar functions over several aspects, and the length, area, thickness, and the like may be exaggerated for convenience. In the description of this embodiment, expressions such as top, bottom, before, after, first, and second indicate relative positions or orders, and their technical meanings are not limited by dictionary meanings.

2 is a cross-sectional view illustrating a coupling structure of the display device according to the present embodiment.

As shown in FIG. 2 , the display device of this embodiment includes a display panel 100 , a back cover 200 disposed on the rear surface of the display panel 100 to support the display panel 100 , and the display panel 100 . ) and a middle cabinet 300 disposed along the edge of the back cover 200 to form a side edge of the display device.

The display panel 100 is a core component for displaying an image in a display device, and may be composed of, for example, an OLED panel. The OLED panel includes a front transparent electrode layer partitioned into a plurality of pixel areas on a transparent substrate, a light emitting layer forming an RGB light emitting area corresponding to each pixel area, and a rear electrode layer formed on a rear surface of the light emitting layer. The transparent substrate is a base for forming a light emitting structure, and has a minimum thickness capable of forming a light emitting layer. The OLED panel is a self-luminous panel and has the advantage that a separate backlight light source is not required.

In addition, the display panel 100 may include various types of display devices such as a liquid crystal panel and a plasma panel in addition to the OLED panel, and may include a backlight unit depending on the type. The display panel 100 is supported by being adhered to the back cover via an adhesive member 110 such as a double-sided tape or a double-sided adhesive foam pad.

The back cover 200 is coupled to the rear surface of the display panel 100 so that the display device can be stably fixed to an external structure (not shown) such as a wall surface or a bracket while supporting the display panel 100 . The back cover 200 is composed of a high-strength composite material to stably support the display panel 100, for example, an aluminum resin composite material (ACM steel sheet), a galvanized steel sheet composite material (Galvanized Composite). Material, GCM steel sheet), and the like. Steel sheets made of ACM and GCM materials are thin and light and exhibit excellent rigidity.

Specifically, the back cover 200 has a composite structure including the central core layer 210 and the first skin layer 220 and the second skin layer 230 formed on the surface of the core layer 210 . The core layer 210 may have a thickness of about 2.0 to 2.5 mm, and the first skin layer 220 and the second skin layer 230 may have a thickness of about 0.5 to 1.0 mm.

The inner core layer 210 is made of an inorganic material and blocks heat generated from the control panel from being transferred to the display panel 100 . The inorganic core layer 210 may be composed of a resin layer made of various types of plastic materials such as polyethylene or polypropylene. In addition, the core layer 210 may be configured by mixing various materials with an inorganic material. For example, magnesium hydroxide, ethylene vinyl acetate, and polyethylene may be mixed.

In addition, the core layer 210 has various structures so as to be light and have high rigidity. For example, the core layer 210 may have a honeycomb structure, a wave structure, or an emboss structure. The core layer 210 of this structure also exhibits the advantage of saving material and securing thermal insulation properties.

The external first skin layer 220 and the second skin layer 230 are made of aluminum plate (Al plate), galvanized steel plate (GI steel plate), or electro-galvanized steel plate (EGI steel plate) in consideration of thermal conductivity and rigidity. made up of plates. The first skin layer 220 and the second skin layer 230 allow the back cover 200 to have rigidity to stably support the display panel 100 .

The middle cabinet 300 is coupled to the back cover 200 at the sides of the display panel 100 and the back cover 200 to protect the side portions of the display panel 100 and the back cover 200 , and an edge region of the display device. to form the outer appearance of the rim part. The middle cabinet 300 may be composed of an extrusion molded body using a metal material, for example, Al, and if necessary, a plastic injection molded body obtained by injection molding a plastic resin or an insert injection molded body using a plastic material and a metal material. will be.

In addition, the middle cabinet 300 has a rectangular frame shape corresponding to the edge shapes of the display panel 100 and the back cover 200, and an outer edge 310 that forms the outer appearance of the edge of the display device, and the outer edge ( 310 is extended to the inside and is composed of a coupling portion 320 coupled to the back cover 200 to form a 'T' cross-section.

The middle cabinet 300 is coupled to the back cover 200 while the coupling part 320 is inserted into the core layer 210 of the back cover 200 . In the back cover 200 , a recess groove 240 from which a part of the core layer 210 is removed is formed in order to secure a space into which the coupling part 320 is inserted. The recess groove 240 may be formed to a depth of about 5.0 to 10.0 mm.

In addition, the middle cabinet 300 is provided with a fixing protrusion 330 having a finely expanded diameter at the front end of the coupling portion 320 . The fixing protrusion 330 may be formed to protrude outward from the end region of the coupling part 320 .

In the middle cabinet 300 having the above configuration, the coupling part 320 is inserted into the core layer 210 between the first skin layer 220 and the second skin layer 230 to be assembled with the back cover 200 . After assembling, the edge of the first skin layer 220 or the second skin layer 230 is compressed while being engaged with the fixing protrusion 330 to fix the assembly. Since the shape of the first skin layer 220 or the second skin layer 230 may be changed by compression to impair the appearance of the first skin layer 220 or the second skin layer 230 , the first skin layer 220 on the front surface that may be covered by the display panel 100 is compressed. It is preferable to be

After the back cover 200 and the middle cabinet 300 are coupled, the display panel is attached to the front surface of the back cover 200 via the adhesive member 110 , thereby completing assembly of the display device.

In the display device having the above configuration, the outer edge 310 of the middle cabinet 300 covers and protects the side surfaces of the display panel 100 and the back cover 200, and at the same time decorates the edge of the display device. .

In addition, in the display device of the present embodiment, the coupling part 320 of the middle cabinet 300 is coupled while being inserted into the back cover 200, so that the thickness of the display device is not involved, which is advantageous for slimming.

In addition, in the display device of this embodiment, the double-sided tape bonding process is not applied between the middle cabinet 300 and the display panel 100 , and the middle cabinet 300 and the back cover 200 , thereby simplifying the assembly process and increasing the efficiency of assembly. can improve

In addition, in the display device of the present embodiment, since the middle cabinet 300 and the back cover 200 are structurally coupled, the coupling force is improved and the durability of the coupling force can be improved because it is not affected by the passage of time or the external environment.

3A to 3C are process diagrams illustrating an assembly process of the display device according to the present embodiment, and FIG. 4 is a process diagram illustrating an assembly process of the middle cabinet and the back cover, which are main parts of FIG. 3B .

In the assembly of the display device according to the present embodiment, as shown in FIGS. 3A and 3B , the back cover 200 including the core layer 210 and the skin layers 220 and 230 is prepared, and along the side surface of the back cover 200 . The middle cabinet 300 is coupled. At this time, a recess groove 240 for inserting the coupling portion 320 of the middle cabinet 300 is previously formed in the core layer 210 of the edge region of the back cover 200 . The recess groove 240 may be formed by NC machining.

In the assembly of the middle cabinet 300, the middle cabinet 300 is cut to a predetermined length as shown in FIG. 4, assembled on one side of the back cover 200 using a roller 10, and then rollers along each side While moving (10), the middle cabinet (300) is pressed and coupled to the back cover (200).

After assembling the middle cabinet 300 along the side surface of the back cover 200 , as shown in FIG. 3C , the first skin layer 220 in the region where the coupling part 320 is inserted is compressed so that the assembly is fixed. The assembly of the middle cabinet 300 and the back cover 200 is fixed by such a pressing process, so that they are not separated from each other.

And although not shown, the display panel 100 is adhered to the back cover 200 by using the adhesive member 110 on the front surface of the back cover 200 , that is, the first skin layer 220 , as shown in FIG. 2 . The assembly of the display device is completed.

As described above, although exemplary embodiments of the present invention have been illustrated and described, various modifications and other embodiments may be made by those skilled in the art. All such modifications and other embodiments are intended to be contemplated and included in the appended claims without departing from the true spirit and scope of the present invention.

100: display panel
110: adhesive member
200: back cover
210: core layer 220: first skin layer
230: second skin layer 240: recess groove
300: middle cabinet
310: outer edge portion 320: coupling portion
330: fixed protrusion

Claims (7)

display panel;
a back cover having a composite structure including a core layer and a skin layer formed on both surfaces of the core layer, the back cover being disposed on a rear surface of the display panel to support the display panel; and,
A middle cabinet comprising a frame-shaped outer edge portion and a coupling portion extending inside the outer edge portion, the middle cabinet being coupled to the back cover while the coupling portion is inserted into the core layer to decorate the rim portion. The method of claim 1,
The core layer includes a resin layer, and the skin layer includes a metal layer. 3. The method of claim 2,
The middle cabinet has a fixing protrusion protruding from the outer peripheral surface of the coupling part,
The skin layer is engaged with the fixing protrusion by pressing,
and the assembly of the middle cabinet and the back cover is fixed. (a) preparing a back cover of a composite structure in which skin layers are formed on both sides of the core layer;
(b) preparing a middle cabinet in which the coupling part extends into the outer edge of the frame;
(c) coupling the middle cabinet along the back cover side so that the coupling part is inserted into the core layer; and
(d) bonding a display panel to the front surface of the back cover; including a display device assembly method. 5. The method of claim 4,
The preparation of the back cover in step (a) includes forming a recess groove into which the coupling part is inserted by processing the core layer in an edge region. 6. The method of claim 5,
The preparation of the middle cabinet in step (b) includes forming a fixing protrusion protruding from an outer circumferential surface of the coupling part. 7. The method of claim 6,
The coupling of the back cover and the middle cabinet in step (c) includes inserting the coupling part into the core layer and then pressing the skin layer to fix the coupling.

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