KR100971622B1 - combination frame of liquid crystal display - Google Patents

Abstract

The present invention relates to a coupling frame of a liquid crystal display device. In the coupling frame of the liquid crystal display device, a plurality of first mounting parts are formed along a side surface of the coupling frame, and a bottom fixing protrusion protrudes inside the first mounting part. Chassis; A light source for emitting light is installed and extends from the side surface corresponding to the first seating portion, and an end portion of the first heat dissipation portion has a fixing groove into which the fixing protrusion is inserted and a handle extending from an end of the fixing groove. And a middle chassis having a rectangular frame shape surrounded by the side of the bottom chassis.

As a result, a coupling frame of the liquid crystal display device is provided, which prevents a phenomenon in which heat generated from a light source is concentrated in a bottom chassis and easily emits heat generated from a light source to the outside through the middle chassis.

In addition, by lowering the internal temperature of the liquid crystal display device to prevent the middle chassis is deformed by the heat, to prevent the appearance deformation of the liquid crystal display device, there is provided a coupling frame of the liquid crystal display device that can be made slim.

LCD, frame, middle chassis, heat sink

Description

Combination frame of liquid crystal display

The present invention relates to a coupling frame of a liquid crystal display device, and more particularly, to easily dissipate heat generated from a light source of a backlight unit, to prevent distortion of the frame, and to prevent deformation of the light guide plate or optical sheet, thereby decreasing luminance. It relates to a frame coupling structure of the liquid crystal display device that can be prevented.

In general, a liquid crystal display (LCD) is an apparatus that displays an image by using optical anisotropy of the liquid crystal. The LCD is capable of driving by using low power, has a vivid color reproduction ability, and the liquid crystal panel itself does not emit light. It is a light emitting device.

The liquid crystal display device has recently been spotlighted as a next generation display device along with a plasma display panel or a field emission display because it has better visibility and a smaller power consumption than a cathode ray tube having the same screen size as the conventional CRT.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an enlarged cross-sectional view of a main part of a coupling frame of a liquid crystal display device according to the prior art. Referring to FIG. 1, a liquid crystal display device according to the prior art includes a driving circuit unit to output an image ( 100, a backlight unit 200 disposed at the rear of the liquid crystal panel 100 and emitting light over the entire surface of the liquid crystal panel 100, and a case for coupling the liquid crystal panel 100 and the backlight unit 200 to each other. It consists of 300.

Although not shown, the liquid crystal panel 100 may be classified into an array substrate and a color filter substrate, and a liquid crystal layer injected between the array substrate and the color filter substrate, and drives the liquid crystal panel 100. A driving circuit is provided to make the

The backlight unit 200 is divided into an edge type and a direct type according to the installation position of the lamp 210. Hereinafter, the backlight unit 200 will be described with reference to the edge type backlight unit.

The backlight unit 200 may include a lamp 210 that emits light by an applied power source, a reflector 220 that reflects light emitted from the lamp 210, and light and reflector 220 that are emitted from the lamp 210. The light guide plate 230 for guiding the light reflected from the light guide plate, and the plurality of optical sheets 240 for diffusing and condensing the light transmitted and installed on the light guide plate 230 may be divided.

The case 300 is for fixing and protecting the liquid crystal panel 100 and the backlight unit 200. The case 300 is provided at the top of the liquid crystal panel 100 and the lower portion of the backlight unit 200. The bottom chassis 320, the liquid crystal panel 100, and the middle unit 330 interposed between the backlight unit 200 may be classified.

Then, in the liquid crystal display, the backlight unit 200 is installed on the top surface of the bottom chassis 320, and then the hook portion 321 of the bottom chassis 320 and the hook portion 331 of the middle mold 330 are hooked together. After fixing the backlight unit 200 and installing the liquid crystal panel 100 on the middle mold 330, the top chassis 310 and the middle mold 330 or the top chassis 310 and the middle mold 330 The bottom chassis 320 is coupled by screws to fix the liquid crystal panel 100.

However, in the LCD according to the related art, as the lamp is installed on the side of the bottom chassis, heat generated from the lamp is concentrated in the bottom chassis.

In addition, since the top chassis, the middle mold and the bottom chassis surround the lamp portion in which heat is generated, there is a problem in that heat generated from the lamp is not easily released.

As the heat is not released, the temperature inside the case rises, the middle mold formed of the mold is deformed by heat, and the appearance of the liquid crystal display is deformed, thereby causing a torsion phenomenon.

In addition, there is a problem in that the light guide plate or the optical sheet provided in the bottom chassis is deformed by heat to lower the brightness.

In addition, there is a problem in that disassembly and assembly is cumbersome between maintenance according to the above-described problems, and a risk of secondary breakage occurs.

Accordingly, an object of the present invention is to solve such a conventional problem, to prevent the heat generated from the light source is concentrated in the bottom chassis, and to easily discharge the heat generated from the light source to the outside through the middle chassis. The present invention provides a coupling frame of a liquid crystal display device.

In addition, by lowering the internal temperature of the liquid crystal display device to prevent the middle chassis is deformed by the heat, to prevent the deformation of the external appearance of the liquid crystal display device, and to provide a slim coupling frame of the liquid crystal display device.

In addition, an object of the present invention is to provide a coupling frame of a liquid crystal display device capable of preventing the luminance of a light guide plate or an optical sheet installed in a bottom chassis from being lowered.

In addition, the present invention provides a coupling frame of a liquid crystal display device that can easily disassemble and assemble between maintenance, prevent secondary damage, and improve work efficiency.

According to the present invention, a plurality of first seating portion is formed along the side recessed, the bottom chassis protruding a fixing projection inside the first seating portion; A light source for emitting light is installed and extends from the side surface corresponding to the first seating portion, and an end portion of the first heat dissipation portion has a fixing groove into which the fixing protrusion is inserted and a handle extending from an end of the fixing groove. It is achieved by the coupling frame of the liquid crystal display device comprising a; a middle chassis of the rectangular frame shape is surrounded by the side of the bottom chassis.

Here, the bottom chassis has at least one second seating portion formed along a side surface between adjacent first seating portions, and the middle chassis extends from a side surface corresponding to the second seating portion, and an end portion of the bottom chassis is formed on the side surface of the bottom chassis. Preferably, the second heat dissipation portion protruding toward the outside is formed.

Here, the bottom chassis has a rectangular frame shape having a plurality of first catching portions protruding or recessed along a side surface, and having a second catching portion corresponding to the first catching portion and a supporting portion corresponding to the second heat radiating portion along the side surface. It is desirable to further form the top chassis.

Here, both sides of the first heat dissipation portion or both sides of the second heat dissipation portion is preferably recessed to form a flow groove.

Here, the middle chassis is preferably characterized in that the metal material.

According to the present invention, there is provided a coupling frame of a liquid crystal display device which prevents a phenomenon in which heat generated from a light source is concentrated in a bottom chassis and easily emits heat generated from a light source to the outside through a middle chassis.

In addition, by lowering the internal temperature of the liquid crystal display device to prevent the middle chassis is deformed by the heat, to prevent the appearance deformation of the liquid crystal display device, there is provided a coupling frame of the liquid crystal display device that can be made slim.

In addition, a coupling frame of a liquid crystal display device capable of preventing the luminance of the light guide plate or the optical sheet provided in the bottom chassis from being lowered is provided.

In addition, there is provided a coupling frame of a liquid crystal display device that can easily disassemble and assemble between maintenance, prevent secondary damage, and improve work efficiency.

In addition, there is provided a coupling frame of a liquid crystal display device which facilitates detachable coupling between the bottom chassis and the middle chassis and can improve the heat dissipation effect.

In addition, a coupling frame of the liquid crystal display device capable of increasing the heat transfer rate and preventing an internal temperature of the liquid crystal display device from rising is provided.

Prior to the description, in the various embodiments, components having the same configuration will be representatively described in the first embodiment using the same reference numerals, and in other embodiments, different configurations from the first embodiment will be described. do.

Hereinafter, a coupling frame of a liquid crystal display according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is an exploded perspective view illustrating a coupling frame of a liquid crystal display according to an exemplary embodiment of the present invention, and FIGS. 3 and 4 illustrate a coupling frame of a liquid crystal display according to an exemplary embodiment of the present invention. Perspective view.

2 to 4, a liquid crystal display device according to an exemplary embodiment of the present invention includes a liquid crystal panel 44 including a driving circuit unit to output an image and a rear surface of the liquid crystal panel 44. A backlight unit for emitting light over the entire surface of the 44, and a coupling frame for coupling the liquid crystal panel 44 and the backlight unit.

Coupling frame is to secure the liquid crystal panel 44 and the backlight unit by fixing

A bottom chassis 10 provided below the backlight unit, a middle chassis 20 interposed between the liquid crystal panel 44 and the backlight unit, and a top chassis 30 provided above the liquid crystal panel 44 may be classified. Can be.

In the bottom chassis 10, a plurality of first seating parts 13 are recessed along a side surface thereof, and a fixing protrusion 17 protrudes inside the first seating part 13. In addition, it is preferable that at least one second seating portion 15 is further formed along the side surface between the first seating portions 13 adjacent to the bottom chassis 10. In addition, a plurality of first catching portions 11 may protrude or be recessed along the side surface of the bottom chassis 10. The first catching portions 11 may include the first seating portion 13 and the second seating portion. It does not interfere with (15).

On the bottom surface of the bottom chassis 10, a reflecting plate 41, a light guide plate 42, and an optical sheet 43 forming a backlight unit to be described later are stacked.

The middle chassis 20 is provided with a light source 45 for emitting light inside the side as shown. The middle chassis 20 is formed in a rectangular frame shape, and preferably made of a metal material in order to increase the thermal conductivity. The middle chassis 20 is manufactured using at least one of an aluminum plate and a zinc plate, and may be manufactured using an alloy of aluminum or zinc or a plated plate. For example, the middle chassis 20 may be an aluminum plate or steel galvanized steel (SECC).

In addition, the middle chassis 20 is formed with a first heat dissipation part 21 extending from a side surface corresponding to the first seating part 13. The first heat dissipation part 21 is bent at an extended end to fix the protrusion 17. ) Is inserted into the fixing groove 25 is formed, the bending is extended from the end of the fixing groove 25 is formed a handle 26.

Both sides of the first heat dissipation part 21 may be recessed to form a flow groove 23. The flow groove 23 formed in the first heat dissipation part 21 serves to partition the side surface of the middle chassis 20 and the first heat dissipation part 21, and the bottom chassis 10 and the middle chassis 20 are coupled to each other. Alternatively, when separated, it serves to give an elastic force to the first heat dissipation portion 21, the bottom chassis 10 and the middle chassis 20 can be stably coupled and fixed by the elastic force of the first heat dissipation portion 21. And, it is convenient to separate the bottom chassis 10 and the middle chassis 20.

In addition, a second heat dissipation part 22 extending from the side surface may be further formed to correspond to the second seating part 15 formed in the bottom chassis 10. The second heat dissipation part 22 is preferably bent at an end to protrude toward the outer side of the bottom chassis 10.

The flow grooves 23 may be formed by being recessed in both sides of the second heat dissipation part 22. The flow groove 23 formed in the second heat dissipation part 22 serves to partition the side surface of the middle chassis 20 and the second heat dissipation part 22.

The top chassis 30 has a rectangular frame shape, and a second locking portion 32 corresponding to the first locking portion 11 is formed along the side surface. In addition, the support part 34 may be formed to correspond to the second heat dissipation part 22 protruding toward the outer side of the bottom chassis 10.

The backlight unit includes a light source 45 emitting light by an applied power source, a reflecting plate 41 reflecting light emitted from the light source 45, and light and reflecting plate 41 emitted from the light source 45. The light guide plate 42 for guiding the reflected light from the light guide plate 42 is installed on the light guide plate 42 can be divided into a plurality of optical sheets 43 for diffusing and condensing the transmitted light.

The light source 45 may use a fluorescent lamp or a light emitting diode. In one embodiment of the present invention, an LED is used and an edge type backlight unit in which the light source 45 is formed along the side surface of the light guide plate 42 is illustrated. .

Although not shown, the liquid crystal panel 44 may be divided into an array substrate and a color filter substrate, and a liquid crystal layer injected between the array substrate and the color filter substrate, and drives the liquid crystal panel 44. A driving circuit is provided to make the

Hereinafter, the coupling state of the coupling frame of the liquid crystal display according to the exemplary embodiment of the present invention will be described.

5 is an enlarged cross-sectional view taken along line a-A of FIG. 4, FIG. 6 is an enlarged cross-sectional view taken along line b-B of FIG. 4, and FIG. 7 is an enlarged cross-sectional view taken along line c-C of FIG. 4.

5 to 7, the reflector plate 41, the light guide plate 42, and the optical sheet 43 forming the backlight unit on the bottom surface of the bottom chassis 10 are sequentially stacked. Here, the light source 45 is fixedly installed inside the side surface of the middle chassis 20, and the upper side of the bottom chassis 10 is covered with the middle chassis 20.

At this time, the side surface of the bottom chassis 10 surrounds the side surface of the middle chassis 20, and then, the first heat dissipation part 21 is inserted into the first seating part 13 to fix the fixing protrusion 25 to the fixing groove 25. 17) is seated, and the second heat dissipation part 22 is inserted and seated in the second seating part 15. Then, the fixing groove 25 of the first heat dissipation part 21 and the fixing protrusion 17 of the first seating part 13 are coupled to the middle chassis 20 to be fixed to the bottom chassis 10.

When the side surface of the bottom chassis 10 covers the side surface of the middle chassis 20, the first heat dissipation part 21 is inserted into the first seating part 13 so that the bottom chassis 10 and the middle chassis 20 are coupled to each other. Therefore, the middle chassis 20 may be stably fixed to the bottom chassis 10 while preventing the flow of the middle chassis 20 from the bottom chassis 10.

Here, the first heat dissipation part 21 protrudes toward the bottom of the bottom chassis 10, and the second heat dissipation part 22 protrudes toward the outer side of the bottom chassis 10. The first heat dissipation part 21 and the second heat dissipation part 22 thus formed serve as a heat sink.

In other words, the metal middle chassis 20 is easy to transfer heat, and can prevent deformation due to heat, the heat generated from the light source 45 through the side of the middle chassis 20 a plurality of first heat dissipation unit 21 and the second heat dissipation part 22 are easily discharged to the outside of the liquid crystal display to prevent the internal temperature of the liquid crystal display from rising.

Here, the flow grooves 23 formed on both sides of the first heat dissipation part 21 or both sides of the second heat dissipation part 22 may have a side surface of the middle chassis 20 and the first heat dissipation part 21, or the middle chassis 20. By partitioning the side and the second heat dissipation portion 22, it is to facilitate the ventilation of the outside air through the flow groove 23 to improve the heat release effect.

The liquid crystal panel 44 is interposed on the upper side of the middle chassis 20, and the upper chassis 30 covers the upper side of the liquid crystal panel 44.

At this time, the side of the top chassis 30 surrounds the side of the bottom chassis 10. Then, the first catching portion 11 protruding from the bottom chassis 10 is inserted into the second catching portion 32 formed in the top chassis 30 to fix the top chassis 30 to the bottom chassis 10. Are combined, and the liquid crystal panel 44 is stably fixed.

The second heat dissipating part 22 protruding from the liquid crystal display device is exposed to the outside of the liquid crystal display while being seated on the support part 34 to improve the heat dissipation effect.

The coupling frame separation operation of the liquid crystal display device is performed in the reverse order of the coupling operation described above. In particular, since the handle 26 formed at the end of the first heat dissipation part 21 protrudes below the bottom chassis, the bottom chassis 10 is disposed. Pulling the handle 26 to the side outside of the bottom chassis 10 in the separation operation between the middle and the chassis 20, the fixing protrusion 17 is easily separated from the fixing groove 25, the first heat dissipation portion 21 and The first mounting portion 13 can be easily separated. Here, the first heat radiating portion 21 is returned to its original state by the elastic force.

The scope of the present invention is not limited to the above-described embodiment, but may be embodied in various forms of embodiments within the scope of the appended claims. Without departing from the gist of the invention claimed in the claims, it is intended that any person skilled in the art to which the present invention pertains falls within the scope of the claims described herein to various extents that can be modified.

1 is an enlarged cross-sectional view illustrating main parts of a coupling frame of a liquid crystal display according to the related art;

2 is an exploded perspective view illustrating a coupling frame of a liquid crystal display according to an exemplary embodiment of the present invention;

3 and 4 are a perspective view showing a coupling frame of a liquid crystal display according to an embodiment of the present invention;

5 is an enlarged cross-sectional view taken along the line a-A of FIG. 4;

6 is an enlarged cross-sectional view taken along line b-B of FIG. 4;

FIG. 7 is an enlarged cross-sectional view taken along line c-C of FIG. 4.

<Explanation of symbols for the main parts of the drawings>

10: bottom chassis 11: first locking portion 13: first seating portion

15: second seating portion 17: fixing protrusion 20: middle chassis

21: first heat dissipation part 22: second heat dissipation part 23: flow groove

25: fixing groove 26: handle 30: top chassis

32: second locking portion 34: support portion 41: reflecting plate

42: Light guide plate 43: Optical sheet 44: Liquid crystal panel

45: light source

Claims (5)

A bottom chassis in which a plurality of first mounting parts are formed along the side surface, and a fixing protrusion protrudes inside the first mounting part; A light source for emitting light is installed and extends from the side surface corresponding to the first seating portion, and an end portion of the first heat dissipation portion has a fixing groove into which the fixing protrusion is inserted and a handle extending from an end of the fixing groove. And a middle chassis having a rectangular frame shape surrounded by the side of the bottom chassis. The first heat dissipation unit is coupled to the liquid crystal display device, characterized in that seated on the first mounting portion to expose to the outside air. The method of claim 1, In the bottom chassis, at least one second seating portion is formed along a side surface between adjacent first seating portions, And a second heat dissipation portion extending from a side surface of the middle chassis to correspond to the second seating portion, the second heat dissipation portion having an end portion protruding outward from the side surface of the bottom chassis. The method of claim 2, The bottom chassis has a plurality of first catching portions protruding or recessed along side surfaces, And a top frame having a rectangular frame shape having a second catching portion corresponding to the first catching portion and a supporting portion corresponding to the second heat radiating portion, further formed along a side surface thereof. The method of claim 3, Both sides of the first heat dissipation portion or both sides of the second heat dissipation portion is coupled to the liquid crystal display device, characterized in that the groove is formed. The method according to any one of claims 1 to 4, The middle chassis is a coupling frame of the liquid crystal display device, characterized in that made of a metallic material.

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