KR20200130581A - Display apparatus - Google Patents

Abstract

The present invention relates to a display device. The display device includes: a panel; a back cover surrounding a rear surface of the panel; and a middle cabinet surrounds the side surface of the panel and is coupled to the edge area of the back cover, wherein the back cover and the back cover have an upper portion and both sides thereof coupled by a double hook portion. As a result, it is possible to stably couple the back cover and the middle cabinet using the double hook portion without a separate screw.

Description

Display device {DISPLAY APPARATUS}

The present invention relates to a display device, and more particularly, to a display device capable of stably coupling a middle cabinet and a back cover without using a screw.

In general, flat-type display devices include a liquid crystal display device, a plasma display device, a field emission display device, and a light emitting display device. Although actively studied, liquid crystal display devices and light-emitting display devices are in the spotlight due to the advantages of mass production technology, ease of driving means, and high-definition implementation.

In recent years, research and development of display devices is in progress, focusing on technology development to reduce manufacturing costs and slimming and thinning to manufacture thinner.

1 is a cross-sectional view showing a cross-sectional configuration of a conventional display device 10. As shown, the conventional display device 10 includes a panel 11, a back cover 12 supporting the rear surface of the panel 11, and a middle cabinet 13 surrounding the panel 11 and the backlight unit (BLU). Includes. Here, the back cover 12 and the middle cabinet 13 are coupled using a screw 14.

In such a conventional display device 10, in order to fasten the screw 14 during the manufacturing process, a product reversal process is required. Accordingly, it is difficult to shorten the working time required for the entire assembly process.

Korean Patent Publication No. 10-2011-0020614 "Liquid crystal display device"

An object of the present invention is to solve the above-described problem, and to provide a display device capable of shortening working time by assembling a back cover and a middle cabinet without using screws.

Another object of the present invention is to provide a display device capable of being manufactured in an ultra-thin type with an inner fastening structure between a back cover and a middle cabinet.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention by those skilled in the art.

The object of the present invention described above can be achieved by a display device. The display device of the present invention comprises: a panel; A back cover surrounding the rear surface of the panel; And a middle cabinet that surrounds a side surface of the panel and is coupled to an edge region of the back cover, and the upper and both sides of the back cover and the back cover are coupled by double hook portions.

According to an embodiment, the double hook portion includes: a first hook protruding toward the middle cabinet from an engaging surface bent perpendicular to the back cover; A first hook insertion hole formed through the middle cabinet and into which the first hook is inserted; A second hook protruding from the middle cabinet toward the engaging surface; It may include a second hook insertion hole formed through the coupling surface to insert the second hook.

According to an embodiment, the middle cabinet extends horizontally toward the inside and includes a panel seating surface when the panel is seated on the upper surface, and the double hook portion extends border regions of the upper and both sides of the middle cabinet and the back cover. Accordingly, it may include an inner double hook portion and an outer double hook portion alternately arranged.

According to an embodiment, the inner double hook portion includes: an inner first hook formed to protrude from an end of an inclined surface formed to be inclined at an angle above the coupling surface to protrude from an end of the inclined surface to a lower portion of the panel seating surface; An inner first hook insertion hole recessed toward an upper portion in a region corresponding to the inner first hook at a lower portion of the panel seating surface; An inner second hook formed to be bent in a "b" shape from a lower portion of the panel seating surface toward the back cover; And an inner second hook insertion hole penetrating through the coupling region between the back cover and the coupling surface, and the end of the second hook may be inserted into the second hook insertion hole and then fitted into a lower portion of the coupling surface. have.

According to an embodiment, the outer double hook portion includes an outer first hook horizontally provided at an end of a connecting shaft vertically formed from the back cover; And an outer second hook formed to protrude from the inner wall surface of the middle cabinet and disposed under the outer first hook, the outer second hook being provided to protrude to have a predetermined curvature from the bottom to the top, When the cover and the middle cabinet are coupled, the outer first hook may be moved along the surface of the outer second hook and then fitted between the panel seating surface and the outer second hook.

According to an embodiment, it further includes a case top coupled to a lower portion of the panel, and the middle cabinet and the case top may be coupled by a coupling screw.

According to an embodiment, the middle cabinet may be formed of at least one of PC, ABS, and PP.

According to an embodiment, the optical sheet coupled to the rear surface of the panel, and a light guide plate and a reflective sheet provided on the rear surface of the optical sheet, wherein the middle cabinet surrounds the optical sheet, the light guide plate, and the reflective sheet. It is provided so that it is.

The display device according to the present invention can stably couple the middle cabinet and the back cover without using a screw by using a double hook portion. Thereby, the manufacturing time can be shortened, and the manufacturing cost can be reduced.

In particular, the display device according to the present invention has a more stable coupling force by alternately arranging inner double hook portions and outer double hook portions having different shapes on the upper and both sides of the middle cabinet and the back cover to apply coupling binding forces from the inner and outer sides respectively Can keep.

At this time, the back cover is provided in an integrated form with the conventional BLU frame so that the coupling surface surrounds the backlight unit, and the double hook portions of the back cover and the middle cabinet are formed in the inner direction of each other, so that the appearance is possible, and the display device is ultra-thin. To be able to design.

1 is a cross-sectional view showing the configuration of a conventional display device;
2 is a schematic diagram showing the basic concept of a display device of the present invention;
3 is a perspective view showing the configuration of a display device of the present invention;
4 is an exploded perspective view showing the disassembled configuration of the display device of the present invention;
5 is a cross-sectional view showing a cross-sectional configuration taken along line AA of FIG. 3;
6 is a cross-sectional view showing a cross-sectional configuration taken along lines BB and CC of FIG. 3;
7 is a cross-sectional view showing a cross-sectional configuration taken along line DD of FIG. 3;
8 is an exemplary view showing another embodiment of the double hook portion of the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those with average knowledge in the art. Accordingly, the shape of the element in the drawings may be exaggerated to emphasize a clearer description. It should be noted that in each drawing, the same member may be indicated by the same reference numeral. Detailed descriptions of known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention will be omitted.

2 is a schematic diagram schematically showing the basic concept of the display device 100 of the present invention. The display apparatus 100 of the present invention includes a panel 110, a back cover 140 provided at the rear of the panel 110, and a middle cabinet 150 provided to surround a side surface of the panel 110. The back cover 140 and the middle cabinet 150 are coupled by a double hook portion 200.

The back cover 140 includes a base plate 141 disposed at the rear of the panel 110 and a coupling surface 143 bent from the base plate 141 toward the middle cabinet 150. The middle cabinet 150 includes a panel seating surface 151 on which the panel 110 is mounted horizontally extending inward.

The double hook part 200 includes a first hook 210 protruding from the coupling surface 143 toward the middle cabinet 150 and a first hook 210 formed through the middle cabinet 150 to accommodate the first hook 210. 1 It is formed through the hook insertion hole 220, the second hook 230 protruding toward the base plate 141 in the lower portion of the middle cabinet 150, and the base plate 141 and the coupling surface 143 It includes a second hook insertion hole 240 into which the second hook 230 is inserted.

The double hook portion 200 includes a first hook 210 protruding from the back cover 140 toward the middle cabinet 150 and a second hook 230 protruding from the middle cabinet 150 toward the back cover 140. ) Are each physically engaged to constrain the positions of the back cover 140 and the middle cabinet 150.

Accordingly, it is possible to stably couple the back cover 140 and the middle cabinet 150 without using a screw. In addition, since the screw is not used in the assembly process, the reversing process is omitted, thereby simplifying the entire assembly process and shortening the working time.

In addition, since the back cover 140 and the middle cabinet 150 are coupled in the inner direction of the middle cabinet 150 by the double hook portion 200, an ultra-thin structure is possible and external appearance is possible.

3 is a perspective view showing a display device 100 of a preferred embodiment to which the concept of the double hook portion described above is specifically applied, FIG. 4 is an exploded perspective view showing the configuration of the display device 100, and FIG. 5 is 3 is a cross-sectional view showing a cross-sectional configuration taken along line AA.

3 to 5, the display device 100 according to a preferred embodiment of the present invention includes a panel 110, a sheet 120, and a diffusion sheet 135 provided on the rear surface of the sheet 120. Wow, the light guide plate 130 provided on the rear surface of the diffusion sheet 135, the back cover 140 provided on the rear surface of the panel 110, and a middle cabinet provided to surround the side surfaces of the panel 110 and the backlight unit 150 and an inner double hook portion 300 and an outer double hook portion 400 for coupling the back cover 140 and the middle cabinet 150 to each other.

In addition, the display apparatus 100 includes an LED array 160 generating light, an LED housing 165 accommodating the LED array 160, and a board assembly that processes an image so that an image is displayed on the panel 110. 170 and a case top 175 provided under the panel 110.

The panel 110 may be a liquid crystal display panel or a light emitting display panel. The edge area of the panel 110 is mounted on the panel mounting surface 151 of the middle cabinet 150. At this time, the panel 110 is fixed to the panel seating surface 151 via the foam pad 111.

A backlight unit BLU is provided behind the panel 110. The backlight unit includes a sheet 120, a diffusion sheet 135, a light guide plate 130, and a reflective sheet 131.

The sheet 120 and the diffusion sheet 135 are disposed above the light guide plate 130 and serve to uniformly diffuse the light emitted from the light guide plate 130. The light emitted from the light guide plate 130 by the sheet 120 and the diffusion sheet 135 may be uniformly emitted to the entire panel 110 and serves to improve luminance. The sheet 120 is fixed to the lower part of the panel seating surface 151 by an adhesive 136.

The light guide plate 130 functions to receive light from the LED 161 as a point light source and convert it into a surface light source. As shown in FIG. 5, the LED 161 is disposed on the side of the light guide plate 130 to irradiate light to the light guide plate 130, and the light flowing into the light guide plate 130 is a light guide plate along the plate surface of the light guide plate 130. The light is evenly emitted on the top and bottom of (130).

A reflective sheet 131 is provided under the light guide plate 130 to reflect light emitted to the lower portion of the light guide plate 130 in an upward direction.

Since the configuration of the panel 110 and the backlight unit is the same as the conventional configuration, detailed descriptions are omitted.

The back cover 140 is provided on the rear surface of the panel 110 to reinforce overall strength and heat dissipation. The back cover 140 may be made of SECC having excellent high strength and heat dissipation characteristics. The back cover 140 includes a base plate 141 disposed on the rear surface of the panel 110 and a coupling surface 143 that is vertically bent inward along an edge region of the base plate 141.

Here, the coupling surface 143 is provided in a form that surrounds the backlight unit, and thus may also perform the role of a conventional BLU frame.

The middle cabinet 150 is provided on the side of the panel 110 and serves to seat the panel 110. The middle cabinet 150 is provided to surround the side surfaces of the panel and the backlight unit. The middle cabinet 150 is formed to extend horizontally inward and has a panel seating surface 151 on which the panel 110 is seated.

The middle cabinet 150 may be formed of any one of polycarbonate (PC), acrylonitrile-butadiene-styrene resin (ABS), and polypropylene (PP).

In the display apparatus 100 according to a preferred embodiment of the present invention, the back cover 140 and the middle cabinet 150 are coupled by two double hook portions 300 and 400 having different configurations. That is, along the upper and both sides of the back cover 140 and the middle cabinet 150, the inner double hook portion 300 and the outer double hook portion 400 are alternately provided with each other so that the back cover 140 and the middle cabinet ( 150) is more stable.

6 (a) is a cross-sectional view showing the coupling configuration of the inner double hook portion 300 in a cross-sectional configuration taken along line BB of FIG. 3, and FIG. 6 (b) is a cross-sectional configuration taken along line CC of FIG. It is a cross-sectional view showing the coupling configuration of the outer double hook portion 400.

The inner double hook part 300 is formed to be recessed under the inner first hook 310 formed on the upper end of the coupling surface 143 of the back cover 140 and the panel seating surface 151 of the middle cabinet 150 An inner first hook insertion hole 320 in which the first hook 310 is accommodated, an inner second hook 330 extending to be bent downward of the panel seating surface 151, and the base plate 141 are combined It is formed through between the surfaces 143 and includes an inner second hook insertion hole 240 in which the inner second hook 330 is accommodated.

The inner first hook 310 is formed to protrude a predetermined length toward the panel mounting surface 151 on the upper end of the coupling surface 143. At this time, an inclined surface 143a is formed between the coupling surface 143 and the inner first hook 310. The inclined surface 143a is formed to be inclined at a certain angle in the outward direction from the coupling surface 143.

The inclined surface 143a is when the back cover 140 and the middle cabinet 150 are hooked together by pressing each other, the inner first hook 310 and the inner second hook 330 overlapping each other in position It plays a role of guiding it so that it can slide elastically and move along.

The inner first hook insertion hole 320 is depressed at a predetermined depth from the lower surface of the panel mounting surface 151 toward the upper direction to accommodate the inner first hook 310. At this time, it is preferable that the depth of depression of the inner first hook insertion hole 320 is formed to be more spacious than the height of the inner first hook 310 for ease of hook coupling. However, when the clearance width is greater than the height of the inner first hook 310, the inner first hook 310 may be separated from the inner first hook coupling hole 320, so that the clearance width is preferably formed not to be large.

Here, in Figure 6 (a), the coupling surface 143 on which the inner first hook 310 is formed is seen to be separated from the base plate 141, but the inner side of the inclined surface 143a is not shown in the drawing. Only the inner first hook 310 coupled to the surface 143 and protruding from a portion of the inclined surface 143a is inserted into the inner first hook coupling hole 320.

The inner second hook 330 is formed by being bent in a "b" shape under the panel seating surface 151. The support shaft 331 formed perpendicular to the panel seating surface 151 is formed to correspond to the length of the coupling surface 143, and the inner second hook 330 at the end of the support shaft 331 is the coupling surface 143 It is formed by bending toward the lower part of.

The inner second hook 330 is elastically bent by the support shaft 331 and is moved along the inclined surface 143a and the coupling surface 143, and then the inner second hook insertion hole 240 under the coupling surface 143 ) Is inserted. At this time, a cut surface 333 cut in the diagonal direction is formed at an end of the inner first hook 310.

The cut surface 333 is formed to have an inclination angle corresponding to the inclined surface 143a so that the inner second hook 330 can easily slide and move along the inclined surface 143a.

The inner first hook 310 is inserted into the inner first hook insertion hole 320 of the middle cabinet 150, and the inner second hook 330 is fitted under the inner first hook 310. In this way, since the inner first hook 310 and the inner second hook 330 of the outer double hook portion 400 are intersected and coupled to each other, they can be stably coupled without a separate screw.

The outer double hook part 400 has an outer first hook 410 protruding from the base plate 141 toward the inner wall surface of the middle cabinet 150, as shown in FIG. 6(b), and the middle cabinet 150 ) And an outer second hook 430 protruding from the inner wall surface of the).

The outer first hook 410 is formed to extend a certain length in the horizontal direction from the end of the connection shaft 411 formed to protrude at a certain height h with respect to the base plate 141. The height h of the connection shaft 411 is formed to correspond to the height of the outer second hook 430. This is because the empty space formed between the base plate 141 and the connection shaft 411 functions as the outer second hook insertion hole 440 into which the outer second hook 430 is inserted.

The outer second hook 430 is formed to protrude from the inner wall surface of the middle cabinet 150. The outer second hook 430 is formed to protrude from the bottom to the top with a certain curvature as shown. That is, the surface of the outer second hook 430 is formed in a curved surface. The outer second hook 430 has a maximum protruding thickness (d) corresponding to the thickness of the outer first hook 410.

Thereby, when the middle cabinet 150 and the back cover 140 are combined, the back cover 140 is pressed from the bottom to the top, and when the middle cabinet 150 is pressed from the top to the bottom, the outer first hook 410 Is bent elastically around the connection shaft 411 and may be inserted into the outer first hook insertion hole 420 after being moved along the curved surface of the outer second hook 430.

The outer first hook insertion hole 420 is formed between the panel seating surface 151 and the outer second hook 430. The outer first hook 410 is fitted between the panel seating surface 151 and the outer second hook 430 to limit movement.

The outer double hook part 400 allows the outer first hook 410 and the outer second hook 430 to engage with each other on the inner wall surface of the middle cabinet 150 to constrain the position of the inner wall surface, and the inner double hook part 300 ) Is the inner first hook 310 and the inner second hook 330 at a position spaced from the inner wall surface of the middle cabinet 150 inwardly engaged with each other so that the position is constrained.

In the display apparatus 100 according to a preferred embodiment of the present invention, 10 inner double hook portions 300 are provided on the upper part of the middle cabinet 150, and 6 are provided on each side of the middle cabinet 150, and the outer double hook portion 400 is The middle cabinet 150 is provided with 16 on the top and 10 on each side.

In this way, since a plurality of inner double hook portions 300 and outer double hook portions 400 having different configurations are provided on the upper and side surfaces alternately with each other, the display device 100 according to the present invention can be used without a separate screw. The cabinet 150 and the back cover 140 can be combined in a stable manner.

In particular, since the combination of the middle cabinet 150 and the back cover 140 is made in the inner region of the middle cabinet 150 that is not exposed to the outside, a thin structure is possible, and there is an advantage that the appearance can be neatly implemented.

Meanwhile, FIG. 7 is a cross-sectional view illustrating a cross-sectional configuration taken along line D-D of FIG. 3. As shown, the display device 100 includes an LED array 160 in the LED housing 165. The case top 175 is disposed outside the LED housing 165. The case top 175 is coupled by the middle cabinet 150 and the coupling screw 190.

That is, the display device 100 of the present invention is assembled by hooking the inner double hook part 300 and the outer double hook part 400 on the upper and both sides during the assembly process, and the lower part by the coupling screw 190. Are combined.

Here, in the display apparatus according to an exemplary embodiment of the present invention, two double hook portions are alternately provided, but in some cases, three or more double hook portions having different shapes may be provided.

Meanwhile, FIG. 8 is an exemplary view showing a configuration of a continuous double hook unit 500 according to another embodiment. 8 is an exemplary view showing a form in which the back cover 140a is disposed behind the middle cabinet 150a.

The inner double hook portion 300 and the outer double hook portion 400 of the display apparatus 100 according to the preferred embodiment described above are respectively an inner first hook 310 and an inner second hook 330 and an outer first hook. The 410 and the outer second hook 430 are arranged vertically and formed in a meshing structure.

On the other hand, in the continuous double hook part 500 according to another embodiment, the first continuous hook 510 and the second continuous hook 530 are continuously disposed horizontally apart from each other at a predetermined interval. The first continuous hook 510 is formed to protrude from the back cover 140a and is received in the first continuous hook insertion hole 520 of the middle cabinet 150a. The second continuous hook 530 is provided to protrude from the middle cabinet 150a and is accommodated in the second continuous hook insertion hole 540 of the back cover 140a.

At this time, a continuous first hook 510 and a continuous second hook 530 are formed to protrude alternately in the back cover 140a and the middle cabinet 150a, respectively, and the continuous first hook insertion hole 520 and continuous A second hook insertion hole 540 is formed in the middle cabinet 150a and the back cover 140a to correspond thereto.

In this way, the back cover 140a and the middle cabinet 150a are formed to cross each other, and the uneven structure may be formed, and stable coupling may be possible even when the hooks are arranged in a horizontal direction.

As described above, the display device according to the present invention can stably couple the middle cabinet and the back cover without using screws using a double hook portion. Thereby, the manufacturing time can be shortened, and the manufacturing cost can be reduced.

In particular, the display device according to the present invention has a more stable coupling force by alternately arranging inner double hook portions and outer double hook portions having different shapes on the upper and both sides of the middle cabinet and the back cover to apply coupling binding forces from the inner and outer sides respectively Can keep.

At this time, the back cover is provided in an integrated form with the conventional BLU frame so that the coupling surface surrounds the backlight unit, and the double hook portions of the back cover and the middle cabinet are formed in the inner direction of each other, so that the appearance is possible, and the display device is ultra-thin. To be able to design.

The embodiments of the display device of the present invention described above are merely exemplary, and those of ordinary skill in the technical field to which the present invention pertains can be well aware that various modifications and other equivalent embodiments are possible. There will be. Therefore, it will be appreciated that the present invention is not limited to the form mentioned in the detailed description above. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. In addition, the present invention is to be understood as including the spirit of the present invention as defined by the appended claims and all modifications, equivalents and substitutes within the scope thereof.

100: display device 110: panel
111: foam pad 120: sheet
130: light guide plate 131: reflective sheet
135: diffusion sheet 136: adhesive
140: back cover 141: base plate
143: coupling surface 143a: inclined surface
150: middle cabinet 151: panel mounting surface
160: LED array 161: LED
165: LED housing 170: board assembly
175: case top 180: cover bottom
185: cover shield 190: coupling screw
200: double hook part 210: first hook
220: 1st hook insertion hole 230: 2nd hook
240: second hook insertion hole 300: inner double hook portion
310: first hook 320: first hook insertion hole
330: second hook 331: support shaft
333: cut surface 340: second hook insertion hole
400: outer double hook portion 410: outer first hook
411: connection shaft 420: outer first hook insertion hole
430: outer second hook 440: outer second hook insertion hole
500: continuous double hook portion 510: continuous first hook
520: continuous first hook insertion hole 530: continuous second hook
540: Continuous second hook insertion hole

Claims (8)

Panels;
A back cover surrounding the rear surface of the panel;
Comprising a middle cabinet surrounding the side surface of the panel and coupled to the border region of the back cover,
The display device, wherein the back cover and the back cover have upper and both side surfaces coupled to each other by a double hook portion.
The method of claim 1,
The double hook part,
A first hook protruding toward the middle cabinet from an engaging surface bent perpendicular to the back cover;
A first hook insertion hole formed through the middle cabinet and into which the first hook is inserted;
A second hook protruding from the middle cabinet toward the engaging surface;
And a second hook insertion hole through which the second hook is inserted through the coupling surface.
The method of claim 1,
The middle cabinet is formed to extend horizontally toward the inside and includes a panel seating surface when the panel is seated on the upper surface,
And the double hook portion includes an inner double hook portion and an outer double hook portion alternately disposed along edge regions of the upper and both sides of the middle cabinet and the back cover.
The method of claim 3,
The inner double hook portion,
An inner first hook formed to protrude from an end of an inclined surface formed to be inclined at an angle above the coupling surface to protrude from an end portion of the inclined surface to a lower portion of the panel mounting surface;
An inner first hook insertion hole recessed toward an upper portion in a region corresponding to the inner first hook at a lower portion of the panel seating surface;
An inner second hook formed to be bent in a "b" shape from a lower portion of the panel seating surface toward the back cover 140;
It includes an inner second hook insertion hole formed through the coupling region of the back cover and the coupling surface,
And the end of the second hook is inserted into the second hook insertion hole and then fitted to a lower portion of the coupling surface.
The method of claim 3,
The outer double hook portion,
An outer first hook horizontally provided at an end of the connecting shaft vertically formed from the back cover;
And an outer second hook formed to protrude from an inner wall surface of the middle cabinet and disposed under the outer first hook,
The outer second hook is provided to protrude from the bottom to the top to have a certain curvature,
When the back cover and the middle cabinet are coupled, the outer first hook is moved along the surface of the outer second hook and then is fitted between the panel seating surface and the outer second hook. Device.
The method of claim 5,
Further comprising a case top coupled to the lower portion of the panel,
The display device, characterized in that the middle cabinet and the case top are coupled by a coupling screw.
The method of claim 6,
The display device, characterized in that the middle cabinet is formed of at least one of PC, ABS, and PP.
The method of claim 7,
Further comprising an optical sheet coupled to the rear surface of the panel, and a light guide plate and a reflective sheet provided on the rear surface of the optical sheet,
And the middle cabinet is provided to surround the optical sheet, the light guide plate, and the reflective sheet.

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