KR20130076227A - Display device - Google Patents

Abstract

PURPOSE: A display device is provided to facilitate the assembly and disassembly of each component for electromagnetic shielding and to reduce the number of components and manufacturing costs. CONSTITUTION: A rear cover is mounted on a front cover (102). A display module (110) is arranged between the front cover and the rear cover. A circuit board (200) is arranged between the display module and the rear cover and includes at least one input terminal (211). A shield component (300) surrounds a region where the input terminal is prepared. A bracket (400) fixes the circuit board. Multiple electromagnetic interference (EMI) gaskets ground the circuit board to the display module.

Description

[0001]

The present invention relates to a display device, and more particularly, to a display device which can effectively shield electromagnetic waves of a circuit board, can easily assemble and disassemble each component, reduce manufacturing costs, and have excellent repair characteristics. .

A display device refers to a device that displays a video signal input from the outside. Such a display device includes a monitor for displaying images received from a computer and a television for displaying images and sound transmitted from broadcasting stations, and includes all devices for displaying images input from the outside.

Conventional display apparatuses mainly have a CRT type, that is, a CRT type, and a CRT type display device is configured in a box shape taking up a considerable volume and installed on a mounting surface such as a desk via a separate stand.

However, with the development of technology, the display device has been changed from a CRT method to a flat panel display device such as an LCD or a PDP, and its thickness has been drastically reduced, and thus the overall weight is significantly reduced.

The display device includes a display module for realizing an image, a circuit board (PCB) for controlling an image of the display module, a sound and communication control, a front cover surrounding a front edge of the display module, and a rear of the display module. A covering back cover.

In addition, the circuit board may be connected to an external device, and is provided with a plurality of input terminals for performing input / output functions of video, audio, and communication.

On the other hand, the display device may be connected to an external device by wireless or wired, a plurality of elements such as a signal processing element, a reservoir and a microcomputer for control is mounted on the circuit board, the passage for transmitting and receiving signals between the elements A pattern that plays a role is formed.

In particular, the circuit board is affected by electromagnetic noise generated by its own noise and other components, resulting in malfunction of the display device. That is, electromagnetic waves, that is, electromagnetic interference (EMI) noise, are generated when an external terminal is connected to a wired line through an input terminal provided on a circuit board or when an external terminal contacts the circuit board. This can cause noise to occur or cause malfunctions.

Accordingly, there is a need for a display apparatus that effectively shields such electromagnetic waves, can reduce the number of components and manufacturing cost for shielding electromagnetic waves, and has a grounding structure having excellent repair characteristics.

An object of the present invention is to provide a display device capable of effectively shielding electromagnetic waves of a circuit board.

In addition, the present invention is to solve the problem to provide a display device that can be easily assembled and disassembled each component for electromagnetic shielding, and can lower the number of components and manufacturing cost.

In addition, an object of the present invention is to provide a display device having a ground structure with excellent repair characteristics.

In order to solve the above problems, according to an aspect of the present invention, a display module and a display module disposed between the front cover having a display area and the rear cover mounted to the front cover and the front cover and the rear cover and the A circuit board having at least one input terminal and a shield member for enclosing an area provided with an input terminal of the circuit board, a bracket for fixing the circuit board, and grounding the circuit board to the display module. Provided is a display device including a plurality of EMI gaskets.

In addition, the shield member may be formed of a metal material, and the bracket may be formed of a resin material.

In addition, the bracket may be fixed to the front cover.

In addition, the shield member may be disposed to overlap an area in which an input terminal of the circuit board is provided, and may not overlap the remaining area of the circuit board.

In addition, a plurality of slots may be formed in an area where the input terminal of the circuit board is provided, and a plurality of mounting protrusions may be provided in the shield member to bind the circuit board and the shield member while being inserted into the slot. .

In addition, the shield member may have a plurality of through holes for passing the input terminal.

In addition, the rear cover may be provided with a recess for accommodating the shield member and the circuit board.

In addition, the EMI gasket may be provided in an area of the circuit board adjacent to the input terminal.

In addition, the circuit board may be provided with an area to which the EMI gasket is attached, and the area may be soldered.

In addition, the recess may accommodate a support plate rotated at a predetermined angle with respect to the rear cover, and the support plate may be exposed to the outside through an opening provided in the recess.

In addition, according to another aspect of the present invention, the cabinet forming the appearance, the display module disposed inside the cabinet and the rear of the display module, and do not overlap the first region and the first region having a terminal array A circuit board including a second area, and a bracket disposed between the circuit board and the display module, the bracket fixing the circuit board in a state surrounding the first area and the second area of the circuit board, and the first of the circuit board. Provided is a display device including a shield member mounted to the circuit board while surrounding an area, and a plurality of EMI gaskets that penetrate the bracket and ground the circuit board to the display module.

In addition, the shield member may be formed of a metal material, and the bracket may be formed of a resin material.

In addition, the circuit board may be provided with a plurality of areas to which the EMI gasket is attached, and the areas may be soldered.

In addition, the regions may be provided at positions where adjacent EMI gaskets surround the input terminal.

As described above, the display device according to an embodiment of the present invention can effectively shield the electromagnetic waves of the circuit board.

In addition, the display device according to an embodiment of the present invention can be easily assembled and disassembled each component for shielding the electromagnetic waves, it is possible to lower the number of parts and the manufacturing cost.

In addition, the display device according to an embodiment of the present invention is excellent in the repair characteristics of the ground structure.

1 is a plan view showing a display device related to an embodiment of the present invention.
2 is a rear view of a display device related to one embodiment of the present invention;
3 is a plan view of the rear cover of the display device of Figure 2 removed.
Figure 4 is an exploded perspective view of a circuit board constituting a display device related to an embodiment of the present invention.
FIG. 5 is a perspective view of a state in which each member of FIG. 4 is coupled; FIG.
6 is a plan view showing a circuit board and a bracket constituting a display device according to an embodiment of the present invention.

Hereinafter, a display device related to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In addition, the same or corresponding components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. For convenience of explanation, the size and shape of each constituent member shown may be exaggerated or reduced have.

On the other hand, terms including ordinal numbers such as first or second may be used to describe various components, but the components are not limited by the terms, and the terms are defined by one component from another component. It is used only for the purpose of distinguishing.

1 is a plan view illustrating a display device according to an embodiment of the present invention, FIG. 2 is a rear view of the display device according to an embodiment of the present invention, and FIG. 3 is a rear cover of the display device of FIG. It is a top view of the state removed.

4 is an exploded perspective view of a circuit board constituting a display device according to an exemplary embodiment of the present invention, FIG. 5 is a perspective view of a state in which each member of FIG. 4 is coupled, and FIG. 6 is an embodiment of the present invention. It is a top view which shows the circuit board and bracket which comprise the display apparatus which concerns on an example.

The display device 100 according to the present invention may be implemented as various types of video display devices such as a television or a monitor.

The display apparatus 100 according to the exemplary embodiment of the present invention includes a front cover 102 having a display area 102a, a rear cover 103 mounted on the front cover 102, and a front cover 102 and a rear surface. The display board 110 disposed between the cover 103 and the circuit board 200 and the circuit disposed between the display module 110 and the rear cover 103 and having one or more input terminals 211 to 213. A shield member 300 for enclosing an area (hereinafter, referred to as a “terminal array”) in which the input terminals 211 to 213 of the substrate 200 are provided, a bracket 400 for fixing the circuit board, and the circuit It includes a plurality of EMI gaskets 230 for grounding the substrate 200 to the display module 110.

Hereinafter, each component constituting the display apparatus 100 will be described in detail with reference to the accompanying drawings.

The cabinet 101 forming the exterior of the display apparatus 100 includes a front cover 102 and a rear cover 103 mounted to the front cover 102. The display module 110 for outputting an image is disposed in the space formed between the front cover 102 and the rear cover 103.

In addition, a recess 104 having a predetermined space is provided in the rear cover 103, and the circuit board 200 and the shield member 300 are disposed in the recess 104.

In detail, the display module 110 is disposed in the space between the front cover 102 and the rear cover 103, and the circuit board is disposed in the space between the display module 110 and the recess 104. 200 and the shield member 300 is disposed.

In addition, the recess 104 may have a shape protruding rearward from the center portion of the rear cover 103, and the circuit board 200 and the shield member 300 may be inserted with a predetermined tolerance. May have a size.

In addition, the cabinet 101 may further include one or more intermediate covers (not shown) disposed between the front cover 102 and the rear cover 103.

The display module 110 includes a cathode ray tube (CRT), an electroluminescent element (EL), a light emitting diode (LED), a vacuum fluorescence display (VFD), and a field emission. A light emitting type or a light receiving type display module such as a field emission display (FED), a plasma display panel (PDP), a liquid crystal display (LCD), or the like, may be included. Here, when the display module 110 is a liquid crystal display panel, a backlight unit composed of a plurality of LEDs may be disposed behind the display module 110.

1 and 2, the display apparatus 100 may include a hinge bracket 510 disposed inside the recess and a support plate 500 rotatably mounted to the hinge bracket 510. have.

In addition, the support plate 500 supports a load of the display apparatus 100 when the display apparatus 100 is supported by the installation surface W at a predetermined angle, and the support plate 500. ) Is positioned at the rear side of the rear cover 103, and specifically, the recess 104 accommodates the support plate 500 that is rotated at a predetermined angle with respect to the rear cover 103. Here, the support plate 500 may be exposed to the outside through the opening 104b provided in the recess 104.

In addition, the support plate 500 may be rotatably mounted to the hinge bracket 150 and may be folded to the main body 101 (hereinafter, folded) or unfolded at a predetermined angle from the display main body 101. (Hereafter expanded).

As described above, the support plate 500 functions as a stand for supporting the load of the display apparatus 100, and has a thin plate shape compared to the display apparatus 100, so that the support plate 500 may be referred to as a flip type stand. It may have a structure rotatable with respect to the display device 100 and may be referred to as a flip hinge stand.

In addition, a cover 511 may be mounted in the opening 104b of the recess 104 to seal the remaining portion except for the support plate 500, and reference numeral 104a denotes an input terminal 211 to 213. ) Represents a through hole for exposing to the outside.

Meanwhile, the circuit board 200 controls an image of the display module 110 and controls sound and communication. The circuit board 200 may be connected to an external device, and is provided with a plurality of input terminals for performing input / output functions of video, audio, and communication.

The display apparatus 100 may be wirelessly or wired connected to various external devices through the input terminals 211 to 213. A plurality of devices are provided, and an electrical pattern is formed to serve as a passage for transmitting and receiving signals between the devices.

In addition, the signal receiver includes a set top box (not shown) or input terminals 211 to 213 exposed to the outside of the wireless signal receiver or the display apparatus 100 for wireless communication with an external device.

The cable terminal may be connected to an external device such as an antenna, a digital camera, a computer, a game machine, or a camcorder, and may include both an analog terminal and a digital terminal.

As such, the input terminals 211 to 213 provided in the circuit board 200 are rear terminal arrays and rear covers exposed to the outside in a direction substantially perpendicular to the rear cover 103 in consideration of user convenience and design elements. It may include one or more of the side terminal array exposed to the outside along a direction substantially parallel to the.

The rear terminal array and the side terminal array may include one or more input terminals 211 to 213, which may include antenna terminals, RGB terminals, composite (AV) terminals, component terminals, and DVI (Digital). It may include at least one terminal of a Visual Interface (HDMI) terminal and a High Definition Multimedia Interface (HDMI) terminal.

The rear terminal array and the side terminal array are formed of the arrangement of the input terminals 211 to 213, and the type, number and arrangement of the input terminals 211 to 213 may be variously configured.

Here, when the circuit board 200 is affected by electromagnetic noise generated by its own noise and other components, the circuit board 200 may cause a malfunction of the display apparatus 100. That is, electromagnetic waves, that is, EMI (Electromagnetic Interference) noise, are generated when the external terminal is connected to the external device by wire through the input terminals 211 to 213 provided on the circuit board 200, or when the external terminal contacts the circuit board. Such electromagnetic waves may cause noise on the display screen of the display apparatus 100 or cause malfunctions in which noise is output.

Therefore, the display device 100 is required to effectively shield such electromagnetic waves, reduce the number of components and manufacturing cost for shielding electromagnetic waves, and has a grounding structure with excellent repair characteristics.

Hereinafter, a shielding structure and a grounding structure of the circuit board 200 constituting the display apparatus 100 will be described in detail with reference to the accompanying drawings.

The circuit board 200 may include a first region 210 having a terminal array and a second region 201 not overlapping the first region.

The most influential part of the EMI of the circuit board 200 is an area 210 in which the input terminal is provided, that is, an area (first area) in which a terminal array is provided. In this case, the shield member 300 surrounds the region 210 in which the input terminals 211 to 213 are provided and is fixed to the circuit board 200.

Specifically, the shield member 300 may be formed of a metal material, and may have a rectangular parallelepiped shape of which one surface is open. The shield member 300 may have a cap shape and is disposed to surround the terminal array 210 and to overlap the region 210 in which the input terminals 211 to 213 of the circuit board 200 are provided. And overlapping with the remaining area 201 of the circuit board 200.

That is, the shield member 300 does not surround the entire circuit board 200 but has a structure surrounding only the region 210 in which the input terminals 211 to 213 having the greatest influence on EMI are provided. By this structure, the display apparatus 100 according to the present invention can reduce the material cost, and can reduce the volume and weight.

In addition, the shield member 300 may have a plurality of through holes 301 for passing the input terminals 211 to 213, and for bonding the shield member 300 to the circuit board 200. The circuit board 200 has a plurality of slots 202 formed in an area 210 provided with the input terminals 211 to 213, and the shield member 300 is inserted into the slot 202 in the state. A plurality of mounting protrusions 302 may be provided to bind the circuit board 200 and the shield member 300.

The shield member 300 may be fastened with a screw to the circuit board 200, the mounting protrusion 302 of the shield member 300 may be soldered to the circuit board 200, and a circuit board may be bonded to the circuit board 200. When the repair of the 200 is required, the repair characteristics may be improved by bending the mounting protrusion 302 to bind the circuit board 200 to facilitate disassembly of the shield member 300 and the circuit board 200.

Therefore, during repair, the shielded member 300 can be easily separated from the circuit board 200 by unfolding the bent mounting protrusion 302, and the terminal array 210 of the circuit board 200 Exposure to the outside makes it easy for the operator to observe or repair.

The bracket 400 for fixing the circuit board 200 may be formed of a resin material, and the bracket 400 may be fixed to the front cover 102. In one embodiment, the bracket 400 includes a polygonal body portion 410 on which the circuit board 200 is seated, and a leg portion 420 extending from the body portion and fixed to the front cover 102. can do.

In addition, the main body 410 of the bracket 400 may fix the circuit board 200 in a state surrounding the first area 210 and the second area 201 of the circuit board 200.

Since the bracket 400 is formed of a resin material, the overall weight can be reduced. Since the bracket 400 is formed of a resin material, the circuit board 200 should be directly grounded to the display module 110.

Referring to FIG. 6, the circuit board 200 is grounded to the display module 110 through a plurality of EMI gaskets 230, and the EMI gasket 230 is an input terminal 211 of the circuit board 200. The substrate may be positioned in an area of the circuit board 200 adjacent to the second substrate 213 and attached to the circuit board 200.

As described above, the part which has the greatest influence on the EMI is an area 210 in which the input terminal is provided, that is, an area in which a terminal array is provided. In an embodiment, the circuit board 200 may be grounded to the display module 110 by attaching the EMI gasket 230 at a position as close as possible to a DVI terminal, a D-sub terminal, and an HDMI terminal.

Since the EMI gasket 230 does not surround the entire circuit board 200, material costs may be reduced and manufacturing processes may be reduced. The size and number of the EMI gasket 230 may be determined in various ways. In an embodiment, the six circuit boards 200 may be provided with six EMI gaskets 230, as shown in FIG. 6.

In addition, the circuit board 200 may be provided with an area to which the EMI gasket 230 is attached, and the attachment area may be soldered 220. On the other hand, the body portion 410 of the bracket 400 may be formed with a plurality of through holes (not shown) for passing the EMI gasket 230.

As described above, the display device according to an embodiment of the present invention can effectively shield the electromagnetic waves of the circuit board.

In addition, the display device according to an embodiment of the present invention can be easily assembled and disassembled each component for shielding the electromagnetic waves, it is possible to lower the number of parts and the manufacturing cost.

In addition, the display device according to an embodiment of the present invention is excellent in the repair characteristics of the ground structure.

The foregoing description of the preferred embodiments of the present invention has been presented for purposes of illustration and various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention, And additions should be considered as falling within the scope of the following claims.

100: display device 101: cabinet
102: front cover 103: rear cover
104: recess 110: display module
200: circuit board 210: terminal array
211 to 213: input terminal 300: shield member
400: bracket

Claims (14)

A front cover having a display area;
A rear cover mounted to the front cover;
A display module disposed between the front cover and the rear cover;
A circuit board disposed between the display module and the rear cover and having one or more input terminals;
A shield member for enclosing a region provided with an input terminal of the circuit board;
A bracket for fixing the circuit board; And
And a plurality of EMI gaskets for grounding the circuit board to the display module. The method of claim 1,
The shield member is formed of a metal material,
The bracket is a display device, characterized in that formed of a resin material. 3. The method of claim 2,
And the bracket is fixed to the front cover. 3. The method of claim 2,
And the shield member is disposed to overlap an area where an input terminal of the circuit board is provided, and does not overlap with the remaining area of the circuit board. The method of claim 4, wherein
A plurality of slots are formed in an area where the input terminal of the circuit board is provided,
The shield member is provided with a plurality of mounting projections for coupling the circuit board and the shield member in a state inserted into the slot. The method of claim 4, wherein
The shield member has a plurality of through holes for passing through the input terminal. The method of claim 1,
And a recess for accommodating the shield member and the circuit board in the rear cover. The method of claim 1,
And the EMI gasket is provided in an area of the circuit board adjacent to the input terminal. The method of claim 7, wherein
The circuit board is provided with an area to which the EMI gasket is attached,
And the region is soldered. The method of claim 7, wherein
The recess accommodates a support plate that is rotated at an angle with respect to the rear cover,
The support plate is exposed to the outside through the opening provided in the recess. A cabinet forming an appearance;
A display module disposed inside the cabinet;
A circuit board disposed behind the display module and including a first area having a terminal array and a second area not overlapping the first area;
A bracket disposed between the circuit board and the display module, the bracket fixing the circuit board in a state surrounding the first and second areas of the circuit board;
A shield member mounted to the circuit board while surrounding the first area of the circuit board; And
And a plurality of EMI gaskets passing through the brackets to ground the circuit board to the display module. The method of claim 11,
The shield member is formed of a metal material,
The bracket is a display device, characterized in that formed of a resin material. The method of claim 11,
The circuit board is provided with a plurality of areas to which the EMI gasket is attached,
And the region is soldered. The method of claim 13,
And the regions are provided at positions where adjacent EMI gaskets surround the input terminal.

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