KR100630932B1 - Display Apparatus - Google Patents

Abstract

 The present invention relates to a display device, comprising: a socket having a power supply terminal and a ground terminal; a line filter electrically connected to the power supply terminal; and the socket and the line filter; And a power supply including a conductive casing. As a result, the power supply of the display device may be grounded and fixed, and leakage of electromagnetic waves generated from the power supply may be prevented.

Power Supply, Line Filter, EMI

Description

Display device {Display Apparatus}

1 is an exploded perspective view showing a display device according to an embodiment of the present invention;

2 is an open perspective view illustrating an image signal generator of FIG. 1;

3A and 3B are plan views seen from the top and bottom of the power supply unit of FIG. 2.

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

100: LCD device 110: front cover

120: rear cover 130: image display panel

140: image driving panel 150: image signal generator

151: conductive board casing 152: PCB

153: conductive cover 160: image driving power generation unit

170: power supply unit 171: socket

172: power supply terminal 173: ground terminal

174: line filter 175: input terminal

176: output terminal 177: conductive casing

178: fastener

The present invention relates to a display device, and more particularly, to a display device having a power input unit with improved grounding and electromagnetic shielding functions.

 Display devices, especially LCD devices, which have been developed in the past, were relatively medium and small. Therefore, the power supply unit provided to supply power to the LCD device is not provided with a separate device other than connecting the ground electrode.

However, as the size of the screen has recently increased, power consumption of the LCD device has increased, and accordingly, a power supply unit that can be applied to large size has been required.

In general, AC power used in homes is input at a frequency of 60 Hz. In the case of small and medium-sized LCD devices, the AC power is not affected by frequency fluctuations. Reacts sensitively Therefore, for smooth operation of such a large display device, a line filter needs to be provided in the power supply unit.

Accordingly, in a large display device, a mounting structure for solving a problem of supporting a power supply unit having a line filter, electromagnetic shielding, and grounding has been required.

Accordingly, an object of the present invention is to provide a grounding and fixing structure of a power supply unit for use in a large display device requiring high power. In addition, to solve the electromagnetic problem generated in the power supply.

According to an aspect of the present invention, there is provided a display apparatus including a power supply unit to which AC power is applied, the power supply unit comprising: a socket having a power supply terminal and a ground terminal; A line filter electrically connected to the power supply terminal; And a conductive casing which accommodates the socket and the line filter and is grounded to the ground terminal. The display apparatus further includes a circuit board and a conductive board casing that accommodates the circuit board. And a ground terminal of the socket, the ground terminal of the socket being grounded to the conductive board casing through the conductive casing.

Here, the conductive casing may be attached to the conductive board casing.

The conductive board casing may have a space for accommodating the conductive casing on one side of the circuit board and the circuit board.

In addition, the socket and the line filter may be surrounded by the conductive casing and the conductive board casing to be shielded from the outside.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

1 is an exploded perspective view of an LCD device 100 according to an embodiment of the present invention. The LCD device 100 includes a front cover 110 and a rear cover 120. In addition, in the accommodation space formed by the front cover 110 and the rear cover 120, an image driving panel electrically connected to and driving the image display panel 130 and the image display panel 130 to form an image. 140). The image driver panel 140 includes an image signal generator 150 for generating an image signal and an image driver power generator 160 for generating image driver power according to the image signal received from the image signal generator 150. Include. The image signal generation unit 150 and the image driving power generation unit 160 respectively protect the PCB from printed circuit boards (printed circuit boards, not shown in the drawing) and a plurality of circuit components, for example, a microcomputer. Conductive board casing (see 151 in FIG. 2). The conductive board casing serves to block leakage of electromagnetic interference emitted from the PCB in addition to protecting the PCB.

 As shown in FIG. 2, the image signal generating unit 150 includes a PCB 152 for generating an image signal in an inner receiving space of the conductive board casing 151, and a power supply unit at one side of the PCB 152. 170 is housed. The upper opening of the conductive board casing 151 is shielded from the outside by the conductive cover 153. Therefore, the electromagnetic waves generated from the PCB 152 and the power supply unit 170 are blocked from leaking to the outside by the conductive board casing 151 and the conductive cover 153.

As shown in FIGS. 3A and 3B, the power supply unit 170 includes a socket 171 having a power supply terminal 172 and a ground terminal 173, and a line filter electrically connected to the power supply terminal 172. 174 and a conductive casing 177 for receiving and supporting the socket 171 and the line filter 174.

Power supplied from an external plug (not shown) is input to the input terminal 175 of the line filter 174 through the power supply terminal 172 of the socket 171. The line filter 174 constantly adjusts an irregular frequency of input power to supply power to the image signal generator (150 of FIG. 1) and the image driving power generator (160 of FIG. 1) through the output terminal 176. .

The ground terminal 173 of the socket 171 is grounded to the conductive casing 177.

The conductive casing 177 is fastened to the conductive board casing 151 through the fastening hole 178. Therefore, since the socket 171 and the line filter 174 accommodated therein are surrounded by the conductive casing 177 and the conductive board casing 151 and shielded from the outside, the leakage of electromagnetic waves generated therefrom can be prevented.

The ground terminal 173 of the socket 171 is grounded to the conductive board casing 151 through the conductive casing 177.

The power supply unit 170 may be provided in the image signal generating unit 150 of FIG. 1 as in the case of the above embodiment, but any one of other components, for example, a plurality of image driving power generating units 160 of FIG. It may be provided in.

On the other hand, the display device according to the present invention is not limited to the LCD device as in the above embodiment, it is applicable to the display device using a cathode ray tube (CRT), the display device using a plasma display panel (PDP), etc. These cases are also included in the scope of the present invention.

 As described above, according to the display device according to the present invention, not only the grounding and fixing of the power supply of the display device, but also the leakage of electromagnetic waves generated from the power supply can be prevented.

In addition, according to the display device according to the present invention, by providing the power supply inside the other conductive board casing it is possible to obtain a simpler structure for mounting the image drive panel.

Claims (5)

In the display device having a power supply unit to which AC power is applied, The power supply unit, A socket having a power supply terminal and a ground terminal; A line filter electrically connected to the power supply terminal; A conductive casing which receives and supports the socket and the line filter and is grounded to the ground terminal; The display device further comprises a circuit board and a conductive board casing for receiving the circuit board, The conductive casing is accommodated in the conductive board casing, And the ground terminal of the socket is grounded to the conductive board casing through the conductive casing. The method of claim 1, And the conductive casing is attached to the conductive board casing. delete The method of claim 2, The conductive board casing has a space for accommodating the conductive casing on one side of the circuit board and the circuit board. The method of claim 2, And the socket and the line filter are surrounded by the conductive casing and the conductive board casing and shielded from the outside.

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